1) From your starting position, dive into the lake, all the way down, until you see a rather bright spot with a Rocket Launcher. Pick up the Rocket Launcher.

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2) Once you surface from the lake, turn right, you'll see some small terrain there, with a tree. Go there, and pick up the armor there to register the secret, although there's a Schofield .45 there as well, but doesn't count as a secret.

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3) From #2, there's a phone booth near the corner of the terrain (behind the rocks, in HD). Go near it to register the secret, and use it if you use to make a phone call.

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4) From the temple's position, before entering, follow the wall to the left until you see some differently colored wall. Blast it with a rocket to reveal an entrance.

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5) From #4, proceed through the entrance to discover a secret hall of fame, and stick around for a small speech and then disco music.

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6) From #4 and #5, turn left and follow the path to the valley. You'll see some crates. Go near them to register a secret.

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7) From #6, there's some ammo behind the crates. Pick it up, but if you do, some waves of Kamikazes (or Kleers, in higher difficulties) will spawn when you're about to leave the valley.

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8) In the corridor followed by the crushing blocks, before going through the blocks, when facing them, turn around, and walk to the dark area, then turn left once you're in a dead end. You'll find Mental's secret room, with a few jump pads with letters on them. If you jump on any pad that doesn't glow, spikes from the ceiling will lower and lower with every jump, until you're impaled and killed by them. Jump on the pad with the letter M first, then on the one with E, then on the one with N, T, A, L. (form the word MENTAL). A wall opposite of where you entered from will move, revealing a +100 health. You can jump on any jump pad after picking up the health.

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9) When you exit the temple, look towards the pit, on its wall on the side you're on. You'll notice a small ledge sticking out, with a Rocket Launcher. Drop there and pick up the weapon. Jump on the lower ledge with the teleport to get back.

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10) After crossing the pit, and grabbing the first (official Rocket Launcher, you'll notice a rock on the wall to the left, sticking out. It's rather spherical. Blow it up to reveal a secret path.

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11) From #10, follow the path underwater, and you'll find yourself near a bridge. Pass the bridge and pick up the secret health.

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12) Before entering the final temple and finishing the level, jump in the lake and dive in until you see a brighter spot with a +50 health.

1) When you get to the second area with bouncers, when you're on the final ledge, turn left, you'll notice a small ledge. Jump on it to be catapulted above the ledge you were previously standing on and collect some ammo. This will spawn a Werebull below in the final ledge though.

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2) As soon as you get out of the temple, turn around and look up. You'll see an Invulnerability powerup on a ledge. Shoot a rocket to the ledge to bring down the powerup. (Note that this secret will only be registered in the Serious Sam HD version of this level. A bug prevents it from being registered in the original version).

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3) In the right temple, with the male jaguar, when Sam says he smells some serious firepower around here, slide on the right side, in the below ledge. You'll see a differently colored part on the wall, shoot a rocket at it to reveal a Minigun.

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4) In the upper right corner of the valley, with a giant boulder on top of a mountain, there's a +100 armor piece. Collect it, and watch out for the rock, as it will fall once you pick it up, and some Werebulls will spawn.

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5) Diagonally opposite of #4, in the lower left corner of the valley, with the Crollywood sign on the mountain, walk towards its end to register the "Crollywood Movie Studio" secret.

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6) In the left temple, with the female jaguar, after passing through the hall with the spikes, there's a bouncer somewhere in the room, in the upper right corner, next to a health vial. Use it to be catapulted in the above beam of the room and collect some sniper ammo and a +100 armor. (only by picking up the armor the secret will register)

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7) In the "middle" pyramid, with the Crystal Skull, enter the hut on the left to find some ammo.

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8) Still in the "middle" pyramid, with the Crystal Skull, go behind the hut on the right to find a secret +25 health.

1) After exiting the starting area, follow the wall to the right and cut down the tree near the house, revealing a secret area with a +50 health.

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2) Opposite of #1, there are some cannonballs in the lower leftmost corner of the courtyard.

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3) In the upper rightmost corner of the first courtyard (near the temple), there's a darker section on the wall to the left. Blow it up to reveal a secret armor.

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4) Opposite of #3, in the upper leftmost corner, pick up the healthpill to trigger a secret "bloodbath" (spawn 3 Majors on top of the walls.)

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5) In the temple with the scary mask, as you enter it, look to the right. You'll see a fallen pillar/column, blow it up to reveal a secret corridor.

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6) From #5, follow the corridor to find a room with some Cannonballs. Blow up the column in the middle to reveal a secret SBC Cannon.

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7) In the next courtyard, with the minigun, there are some trees on the left. Behind the third tree is a teleporter to the "yard of strange-looking heads". To exit the secret yard, enter the temple in the end, opposite of where you teleported from, and touch the blob-like thing.

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8) Still in the same courtyard, there are cannon balls behind the building opposite of the entrance.

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9) Before the Underground Complex, there is a house with a 2-headed snake statue on it. Enter it and sidestep to the right quickly, to find a secret "lost spanish cannon" (which will shoot almost immediately as you enter the house). Also destroy the cannon.

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10) In the village before the Underground Complex, go to the wall opposite of the entrance and look to your right, there is a +50 health behind a house.

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11) When you enter the building that leads to the Underground Complex, in the middle of the hall, there is a pillar above you with a +100 health. Blow it up with a rocket and collect the health.

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12) After sliding down a slide, blow the wall to the right in the hall you're currently in to reveal some secret items.

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13) Opposite of #12, blow the wall to the right to reveal a "secret poker game" (and 3 'Zumb'uls).

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14) In the windy corridor with the spike pits, jump into the first hall on the right and walk in to find a secret passage. When you see an item and pick it up, in the secret corridor, two tiny Cucurbitos will be spawned.

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15) In the lava cave, go to the wall on the right and follow it. Behind the half-submerged building is a small ledge, in the lava river, with some rockets.

1) When exiting the starting building, head for the lower right corner of the area to collect an ammo pack.

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2) Opposite of #1, to discover a "suicidal plant" (Kamikaze). Do not kill him until the secret is registered.

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3) In the part where the Kleers come in, when you're in a lower-height area with a mini-pyramid in the middle, when the Majors come bursting through the walls of where you came front, walk up to the remains and turn left to find a secret +50 health.

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4) After the Force Field, go behind the right house to find some ammo.

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5) After you pick up the Ix Chel mask in the Moon Pyramid, head right of the entrance and approach a small head statue. It will turn into a Marsh Hopper. Let it explode on you or blow it up with a rocket to reveal an item.

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6) Go around the Moon Pyramid until you find a Detonator Switch behind it. Use the switch, and the Pyramid will be blown up (and 2 Highlanders will be spawned).

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7) Back in the yard before the Moon Pyramid, after placing the Ix Chel mask on the alter, and the fireball-shooting statue is destroyed, enter the building it was on to find a secret +100 armor.

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8) In the upper right corner of the last courtyard is a health pill, pick it up to reveal a "secret watcher" (look above to notice the secret watcher)

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9) Shoot the "secret watcher"'s eyes to turn him into the Mighty Kamikaze. You better take some distance though, his explosion radius is HUGE.

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10) In the last room, blow up the two jaguar statues above the exit of the level to reveal a secret health.

1) After leaving the first room, proceed to the end of the corridor. Behind the fourth pillar on the right side, there is a dark hallway with a Heart at the end. Note: Picking it up will spawn 2 Zumb'uls in the corridor.

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2) At the end of the first corridor following the room that you bounce off walls and slide along the floor, there is a teleport in the lamp on the left. You will be teleported above an arch. Jump on the platforms sticking out on the left and right walls to reach a +200 armor.

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3) At the end of the first bridge, after secret #2, on the right side is another teleport which you can use to collect some cannonballs. Use the teleport again to be teleported back to the bridge.

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4) Before proceeding on to the staircase after #3, go to the opposite way to find a +50 health, along with a Kleer Skeleton.

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5) At the 7th window at the staircase, you will hear some whispering noises. Look at the window and spot a small Fiendian Reptiloid Demon standing on it. Kill it to get a health pack.

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6) At the end of the staircase, destroy 2 lamps on a ledge sticking outside of the room. This will spawn "annoying Pinky's lost brothers".

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7) Go to the other ledge and jump on the teleport in the right lamp. You will be teleported above a +200 armor, jump to it to collect it.

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8) At the corridor after the room with an Aztec head statue, destroy all the lamps in it to spawn some cannonballs.

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9) Before entering the small room with the Heart, +200 ammo and Serious Pack, turn right and move towards a lamp. Jump on the lamp to be teleported to the "Rocket-festival gear".

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10) From #9, jump off the structure and collect a nearby Heart to commence a "Rocket Festival" (spawn 6 Major Biomechs.

1) From your starting position, make a circle around the building and collect a Sniper rifle.

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2) In the hall with some spiral starcases, one of the columns has an opening. Use that opening to collect a Heart, and then proceed back the same way you came there. You can also try to jump to the heart after entering the building after the starting area, but the first way is less risky.

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3) Once you are outside of the Ziggurat, head right and you'll notice a darker-colored section on the wall. Blast it with your single shotgun to reveal a +50 health cube.

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4) Opposite of #3, collect an item in the corner to reveal a "suicidal avenger plant". If you destroy the small plant before collecting the item, this secret will not register.

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5) Behind the tower on the left with the hawk wing in it, there is a darker-colored section on the wall. Blast it with the single shotgun to reveal an Armor Shard. Picking it up will spawn a Major Biomech in front of you, but if you walk behind it and don't touch it, it will not notice you.

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6) When entering the building after collecting both hawk wings, look to your right and you'll notice a supply depot through a grating. After unlocking the door, enter the room and go to the right, between two pillars and through a dark hallway, to discover and collect the supplies.

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7) At the right side of the village, in the distance, there are two lonely plants sitting. Collect the Serious Speed power-up there.

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8) From #8, blast the plant with a rocket launcher to reveal a Serious Damage.

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9) After placing both hawk wings and entering the residential area of Persepolis, in the courtyard to the right, after you deal with the initial attacks, to the left of the Winged Horse statue, in a corner next to a building, there is a health pill. Pick it up to enable the Boxing Barry secret. Then, look at the leftmost window of the building, you'll notice it is squeaking and moving. Blast it with a Rocket Launcher to spawn a Reptiloid, which in turn will be knocked out by a boxing glove.

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10) In the same courtyard as #9, at the tower with the green sacred stone, go to the northwest from it and you'll see a wall. Blast a darker section on the wall and move through it, you'll be at a dead end. turn around and look up to your left from there, you'll see a platform with an Invulnerability power-up on it. Shoot a rocket at it to destroy it and collect the Power-Up.

1) From the first room, enter the door to the right, then turn left and head up the staircase. From there head left, and then turn and head left again. You'll be at a platform where you can see the first room. To your left, there is a small bounce pad which you can use to launch yourself atop of a pillar. Jump over the pillars to reach a Heart.

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2) As you enter the yard with the Elephant statue, head left and you will see a small health pill next to a wall. Pick it up, and a few Biomechanoids will be spawned, and the wall will be blown up, allowing you passage to a secret yard.

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3) From #2, head to the end of the secret yard and look for a detonator switch: activate it to blow up one of the towers and reveal some secret cannonballs.

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4) On the left-side wall of the building on the right of the Elephant yard, there is a darker section on the wall which you can blast. Do so and collect an armor piece. (once you do, it will spawn an Armor Shard which in turn will spawn a few Major Biomechanoids.

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5) After leaving the elephant yard, immidiately take out every enemy in the small yard. Afterwards, 6 Kleer Skeletons will be catapulted to you from the wall on the right. Destroy them while they are still in mid-air to get a congratulatory message. The Sniper is recommended for this situation.

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6) In the following yard from #5, head to the bottom right corner of it, next to the gate which you exited from, and pick up some ammo. This will spawn a "mutated plant" (Biomechanoid).

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7) Opposite of #6, there is a darker section on the wall which you can blast to reveal a +100 armor.

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8) Diagonally opposite of #6, or just head north from #7 and then take a turn left, there is a heart in a darkened opening to the wall.

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9) At the yard where you see the Golden Elephant for the first time, make a whole circle around the yard and find a switch attached to the wall. Activate it to enable a secret yard.

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10) At the yard with the Minigun, there are four doors in total: the one you entered from, the one that leads to the Golden Elephant, the one that leads to the next areas of the level and a locked one. After using the switch from secret #9, proceed to the locked door to find the secret yard. Deal with the initial Kleer wave there and walk towards the end of the yard to find a secret supplies depot.

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11) At the final yard, before heading up the staircase, to the left of it is a switch. Use it, and then head to the right, past the exit of the level, and enter a locked building for some supplies.

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12) Still at the final yard, use jumping to get behind the horse, until you face its bottom, and then press the Use button to activate the secret "Horse Power" (spawns a Heart).

1) After leaving the starting room, head right and you'll notice two ledges sticking off the wall. Jump on those ledges and from there onto the platform to collect a Heart, but quickly move away from the platform as a Major Biomechanoid will spawn.

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2) At the yard with the two pools, head for the right pool and go behind it to collect an Ammo Pack.

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3) From #2, dive into the opposite pool and go through the only opening you can swim through (the one without grating) and swim a bit until you find an ammo pack.

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4) From #3, continue swimming, there will be a heart behind grating, you should find a crossway underwater on your way, head right and up to find the heart.

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5) After swimming through the pool, head for the building but don't enter it. Look to your right, you'll see a tower outside the walls of the yard you're currently in. Zoom in with the Sniper and you'll spot a bulls-eye target. Shoot it to lower a part of the right wall with some supplies. Alternatively, you can look for that spot in the wall (it's darkened when compared to the rest of it) and shoot a few rockets at it (5 or so).

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6) Opposite of #5, there is a small darker section on the left wall. Blast it with a rocket to reveal a detonator switch, and then use it to spawn a Highlander.

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7) In the same yard, go around and behind the building with the Lasergun to collect an item which will spawn the "mutated plant and friends" (some Minor Biomechanoids and a Major Biomechanoid).

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8) When entering the building that houses the Grenade Launcher, head right and follow the hallways until you find a room with a Heart. Collect the Heart.

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9) In the room after the narrow corridor in the same building as secret #8, where Werebulls, Kleers and Cucurbitos spawn, turn left to find a secret Armor.

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10) After jumping on the platform into the abyss (where NETRICSA gives you the Leap of Faith message), look up to your left and you'll notice a Heart on a ledge. When the platform is below the ledge, shoot a rocket at the ledge and collect the Heart.

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11) At the final courtyard, look to your left outside the wall. Like secret #4, there will be a tower with a bulls-eye target on it. Shoot the target to launch a few hearts in the air, and eventually one will drop down and you can pick it up.

1) After the starting room, head towards the exit of the ceremonial hall but don't enter it, then turn and find an opening in the wall with a few Cannonballs.

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2) In the Chamber of Cosmos, between a pillar and the first staircase, there is floor that you can jump on. After doing so, stick to the right or left walls and move along to get the Heart. If you try to get it by moving through the middle, you will be teleported back to the staircase (use this to leave the secret area after collecting the Heart).

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3) After the narrow bridge, before the second staircase, head left of it and collect some secret Sniper ammo.

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4) In the room accessed using the elevator, visit one of its corners, in the middle of them should be small holes, mouse-sized. Shoot them with any weapon to summon "deadly midgets" (extremely small werebulls).

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5) Before exiting the Chamber of Cosmos, visit the lamp on the right side of the ramp you slided from and spot a bouncer pad. Use it to access a secret area with some ammo, but immediately use the teleported located there after picking up the ammo as a Major Biomechanoid will spawn.

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6) When you exit the Palace and are outside, look to your left and you will see a humongous pillar with a warrior with glowing eyes carved onto it. Shoot a rocket at it to reveal a secret teleport.

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7) In the courtyard with the third tablet, in the wall opposite of the entrance behind a statue is a darker section on the wall. Blast it to reveal an Invulnerability power-up.

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8) In the courtyard following from secret #7, there is a health pill in a corner before entering the building and exiting the yard. Pick it up to spawn a "Mighty Gizmo" (giant Marsh Hopper that will spawn several extremely smaller ones upon death).

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9) After revisiting the first yard, go to the left of the entrance of the Tower of Babel to find a secret Invulnerability power-up.

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10) After collecting all tablets, go to the door that leads to the yard with the first tablet again for a secret "round 2" (same for the other yards.)

1) In the starting area, the third house on the left has a squeaking, moving door. Shoot it or slash it with the knife to destroy it and find a Double Shotgun.

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2) After the Kill-O-Matic, you will notice a small opening to the wall before the bridge with the Sniper. Crouch and press the use button to activate a switch, spawn a Common Reptiloid and have it punched and gibbed by a boxing glove.

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3) In the middle of the bridge, jump on the platform on the left side, around the Pillar, and collect a secret health. Use the bouncer pad to get back to the bridge.

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4) As you enter a big yard after the bridge, head right behind a house to collect some secret ammo.

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5) Opposite of #4, the house on the top right corner has another secret ammo behind it.

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6) In the graveyard, approach the graves. You may open them if you wish to see some Croteam Bigheads.

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7) In the courtyard with the Rocket Launcher, there is a dead tree. Pick up all Napalm and Rocket ammo around it, kill all enemies and then move away for it to turn into a "jumping plant" (Marsh Hopper).

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8) After the yard with the Werebulls, Cucurbitos, Kleers and Marsh Hoppers, there is a barrel in the right corner close to the exit. Destroy it to reveal an Invulnerability power-up.

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9) From your location at secret #8, head right behind the houses to discover a Kleer, a secret phone booth and some rockets. (Pick the rockets up to register the secret.)

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10) In the clock gears room, as you enter it, dive into the small water pool, turn right and continue through the dark hallway to find a Heart.

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11) In the courtyard following secret #10, as you enter it, the house on the right contains the "Midnight Secret" items. The Midnight Secret is enabled when 15 minutes in the level have passed, and is disabled 60 seconds later. If you miss it, you can either shoot 10 rockets at the door or simply touch it and it will open (you can touch it to open it as many times as you want). Collect the items and the minigun there to register the secret.

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12) Before you exit the same courtyard as #11, turn right and go behind the houses. Prepare to kill a Kleer and find a secret +100 armor.

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13) As you enter the next yard following the courtyard from secrets #11 and #12, turn left and go behind the house to collect some ammo.

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14) Diagonally opposite of #13, there is some armor behind the house on the top right corner of the courtyard.

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15) In the water cave, look for a +50 health cube in the lake.

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16) In the last yard, there is a barrel in one of the corners. Blast it to reveal a secret armor.

1) At the first village, on the left side at the start there is a house with a squeaking, moving door. Blast it to reveal a secret Serious Damage.

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2) At the windmill, there is a switch. Press it to summon a secret Santa, and shoot the Santa to get some bonus items (best done with either the Single Colt or the Flamethrower, to get as many items as possible).

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3) On the left side at the other half of the village, you can see Santa's feet in a chimney. Blast them to discover a "jammed Santa".

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4) In the same area, blast the Snowman with a rocket to reveal a secret armor.

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5) In the second village, at the start, pick up some armor to trigger a "snowman avenger" and quickly destroy him.

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6) The house on the right of the snowman avenger has a squeaking door. Blast it to reveal an invulnerability power-up.

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7) Opposite of #6, there is a another snowman with a switch on it. Press it to summon another secret Santa and repeat the procedure like secret #2.

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8) Before entering the lava caves, continously shoot rockets at the snowman to reveal an "incredible shrinking snowman", which in turn will spawn 2 Major Biomechanoids.

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9) In the first lava cave, you'll notice a gap in the stone bridge. Jump on it to be teleported to a secret Heart.

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10) As you enter the second lava cave, look for a glow in the distance up ahead. Zoom in with the Sniper Rifle to spot a platform with some cannonballs on it, then blast it with a Rocket. Proceed and collect it afterwards to register the secret.

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11) Before exiting the second cave, go behind the rocks on the left of the exit to discover a secret Cannon.

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12) In the third cave, when you are near the floating rock platforms, jump to the leftmost farthest one and wait until it transports you to some secret +200 armor.

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13) Underneath the arched bridge before you go to the portal to the Ice Castle, make way to the other side. Turn left and carefully scoot your way underneath it and collect a +100 health.

1) From your starting position, turn right and blast a darker-colored section on the wall to reveal a Heart and Serious Damage.

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2) At the end of the first corridor, you can see Groovy Gregory hanging out from one of the windows of a tower. Shoot him to spawn a Serious Damage.

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3) In the middle of the third corridor, on the wall at the left, shoot a darker colored section of it to reveal a teleport to a secret pumpkin field. Watch out for Static Cannons placed there, and do not move out of the path if you don't want to spawn extremely small Cucurbitos.

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4) In the fifth corridor, on the right side of the wall is another darker section. Blast it to reveal a teleport to an Embryo Museum. Picking up any power-ups there will spawn two Highlanders: one on the left and one on the right.

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5) At the end of the fifth corridor and at the start of the sixth and final one, at the tower on the left there is a Harpy mooning the player from a window. Shoot her with the Sniper Rifle to spawn an invulnerability power-up.

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6) In the final battle, after approximately 85-90 seconds, a small section on the right side of the wall will open, revealing a secret Heart.

Other Guides by me:
http://sp.zhabite.com/sharedfiles/filedetails/?id=231547960
http://sp.zhabite.com/sharedfiles/filedetails/?id=121303955
http://sp.zhabite.com/sharedfiles/filedetails/?id=481397482
http://sp.zhabite.com/sharedfiles/filedetails/?id=129738470

Guides by other people:
BFE:
http://sp.zhabite.com/sharedfiles/filedetails/?id=117949220
http://sp.zhabite.com/sharedfiles/filedetails/?id=343424493
http://sp.zhabite.com/sharedfiles/filedetails/?id=343425123
http://sp.zhabite.com/sharedfiles/filedetails/?id=239033823
Rev:
http://sp.zhabite.com/sharedfiles/filedetails/?id=643797498
HD:TFE:
http://sp.zhabite.com/sharedfiles/filedetails/?id=121157621

http://sp.zhabite.com/sharedfiles/filedetails/?id=343419315
http://sp.zhabite.com/sharedfiles/filedetails/?id=199395743
http://sp.zhabite.com/sharedfiles/filedetails/?id=417527261
HD:TSE
http://sp.zhabite.com/sharedfiles/filedetails/?id=121921406
http://sp.zhabite.com/sharedfiles/filedetails/?id=343421775
http://sp.zhabite.com/sharedfiles/filedetails/?id=343423268
http://sp.zhabite.com/sharedfiles/filedetails/?id=673907232
http://sp.zhabite.com/sharedfiles/filedetails/?id=571410458
SS2:
http://sp.zhabite.com/sharedfiles/filedetails/?id=158037749
DD:XXL:
http://sp.zhabite.com/sharedfiles/filedetails/?id=429034076