The eagle has landers - In Ascension, escape on all 3 lunar landers.
Self-explanatory. Use all 3 landers after turning on the power.


They are going THROUGH! - In Ascension, kill at least 5 zombies with 1 Gersh Device.
Self-explanatory. Train a bunch of zombies and throw a Gersh Device at the zombie. You can get a Gersh Device from the Mystery Box.


Space Race - In Ascension, Pack-a-Punch a weapon by round 8.
This achievement can take a couple attempts, but I got it by using a high-point gun and trying to get as many points as possible. I did not purchase every door, any of perks, and repaired as many barricades as possible.


Chimp on the barbie - In Ascension, kill a space monkey with a fire trap.
To activate a monkey round, you simply have to purchase a perk and wait until a special round starts. After that lure a monkey to a fire trap on the map and activate the trap.

Like any other music EE in the Black Ops games, you have to find 3 teddy bears around the map and press your use key on them. After all 3 are pressed a song will play.

The song Abracadavre written by Kevin Sherwood and sung by Elena Siegman is the song that plays.

The locations of the bears are as follows:

1. In the starting room, go up to the second level and turn right, the bear is at the end of the walkway.
   
2. At the Lunar Lander by Stamin-Up. If looking at the lander, it is to the left behind a gate.
   
3. At the Lunar Lander next to the rocket. When walking on the platform towards to lander, turn right at the end, and turn right and look up.
   

The first step to any easter egg in zombies is to turn on the power. Power can be found by purchasing the door next to Quick Revive, and keep following the stairs up. After that you will need to activate and link all 3 Lunar Landers. The 3 landers can be found at: PhD Flopper, Stamin-Up, and next to the rocket past Speed Cola. These will be needed to launch the rocket and for a later step.

Step 2 is activate Node 1 of the Casimir Mechanism. First you will need Gersh Devices from the Mystery Box. After that head towards the steps next to the PhD Flopper lander, but do not go up the steps. Instead, go to the right and move next to the concrete barricade next to it. You will need to throw a Gersh Device at the generator on its side outside the map. If thrown close enough, the generator will get sucked up into the black hole. After that head towards the Stamin-Up lander. Once in the same area as the lander, head left and go under the stairs where the zombies come out of the window. Press your use key on the computer and an Illuminati symbol should show up on the screen. Node 1 has been activated.

Each time a node is successfully activated, a new light on the Casimir Mechanism will appear.

The Casimir Mechanism.

To activate Node 2, you will need a special round, or a Space Monkey round, to occur. These replace the Hellhound rounds, but will only happen if a player has purchased any perk on the map.

To activate the second node, all 4 players will have to press 4 buttons around the map simultaneously. The locations of the 4 buttons are as follows:

1. Opposite Juggernog in the same room.
   
2. To the left of PhD Flopper.
   
3. To the left of Stamin-Up.
   
4. In the same room as Speed Cola, on the other side of the door frame.
   

To activate Node 3, you will need some patience. You will also need to launch the rocket, you do not have to blow it up, but feel free to. This step will work best with a crawler. After launching the rocket, and completing the last 2 nodes, you may notice there is a clock in the same room as the area the rocket launched from on the wall. All 4 players will need to stand on the metal grate below the launch pad for 2 minutes. If the crawler is left in the right spot, you should be able to do this flawlessly.

For the second to last step, you will need to fly around the map on the landers. You'll end up spelling the word "LUNA" by flying from place to place. To start, you will need the lander to start at spawn. From spawn to Stamin-Up, back to spawn, over to Speed Cola, and finally back to Stamin-Up. A player will need to stay on the lander while this is going on so the other players can go to the lander controls to move it around.

After all 4 nodes have been activated, you will need to head over to the Casimir Mechanism as shown above. On the ground in front of the mechanism, will be a glowing orb. For the final step, you will need a Pack-a-Punched Thunder Gun, 2 Pack-a-Punched Ray Guns, Gersh Devices, and Matryoshka Dolls. You will need to throw down the Gershs and Dolls, and then shoot the orb on the ground with the Thunder Gun and Ray Guns. If enough damage / shots are done, the orb will rise into the air. With this, you have freed Anton Gersh from Samantha, enacted another step in Richtofen's grand plan, and will be rewarded with a 90 second Death Machine. Congratulations!