Bears are relatively easy to find in the game since they are the first enemy you'll encounter. I would recommend either replaying the first section of level one or level two if you're missing these creatures; they roam those areas in droves. Don't bother going further than the first section - once you kill them and go through the door, backtrack and they will respawn.

There's no real grouping of dire wolves in the game. The best you can do if you need to farm them is to go back to level one where you first encountered them midway through and you'll find a room with three of them in it you can farm.

It isn't the most effective route, but it is the best the game offer's if you didn't unlock it naturally by story progression.

Knife bandits are best farmed in the beginning of level two. Just after the bears in the first area, you'll climb up some platforms and before you enter your first door you'll encounter two knife bandits. Immediately after entering area two of level two, you'll encounter two more. Go back and forth between areas one and two to re-spawn the bandits.

For green slimes, the easiest way to farm them is by replaying the boss battle with King Carl III at the end of the first level. He spawns an infinite amount of green slimes and if you defeat him and move on to level two, you can go back and he'll respawn. Simple, right?

If you're missing these annoying enemies, the largest concentration is located in level four in the same room as the game's largest concentration of zombies are. Midway through level four you'll encounter a room with two rows of silver coins spanning the entire length of the room. Here you'll be greeted by both zombies and a plethora of rabid bats.

It's a very small corridor so go slow and if you have it, use the flamethrower to make quick work of everything inside. Exit and re-enter the area to respawn everything.

Spiders appear to be very scattered throughout the whole game, making them a tad annoying to kill for the achievement. The quickest route to farming them comes in the latter part of level four. When you get to the water hazards as shown below that have bats and bees looking to kick you into them, head down and you'll encounter one spider. Head through the door and just on the otherside are two more spiders to dispatch.

Bounce between the two rooms and you should clean up those achievements fairly easily.

Fire slimes can be found in abundance in the last level, especially midway through the level. You'll descend a large portion of one room and run into three along with two hulking bandits as well as four more futher into the level by themselves; both are great place to farm these things.

Balors are pretty scattered late in the game due to their ranged ability taking out multiple hearts per hit. You won't find huge concentrations of them, but I found the easiest way to farm them is in the second room of level five. Once you enter, immediately drop down to the bottom where you'll encounter three right away and a few slimes.

This area also has the added bonus of being a great place to farm money if you're hard up for it for upgrades and such.

The achievement icon for the turrets is actually just Cally, an error on the developer's part. You're looking for skulls on sticks that shoot bullets. Late game in the later levels (level five and six) are your best bet for farming these, though they are sparce so it will likely be the last achievement you unlock.

You can farm zombies at the same time you farm rabit bats, as the largest grouping of the two are in the same corridor of level four about midway through (zombies also include the previous room, bottom level). With over a dozen zombies between the two rooms, farming them will be a breeze.

You encounter Smokeys early on, but I'd recommend visiting the last level (level six) if you need to grind more kills. In the very beginning, you'll run into eight of them in a row, making this the quickest way to farm them in the game.

Bees are peppered in several places during the game and there's a couple of great farming locations for them. My personal favorite was in level six when you get to the first lava pit and have to jump over it on small platforms. Bees are just off screen on each one, which will net you several kills, including two more just past the door.

If you farm here, just be careful and lure the bees to the previous platform. Fighting them on the initial one will more-often-than-not have you sent into the lava from knockback.

Skeletons appear late in the game, which is also where I recommend you farm them. In level six, just one door after leaving the Smokey room in the beginning, you'll encounter a room filled with them, making this the best place to farm them in the game; just watch out for all the bones!

Typically found solo or in packs of two, hulking bandits can be farmed fairly easily in level six around the same location as the fire slimes mentioned above where they mingle together. There is another spot in level six over a lava pit that carries four in one room. While dangerous, it is also a great place to farm them if need be.

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