1. Gersh generator + computer

Near the MP5K/PhD Flopper area, look outside the map for a generator with a glowing white light. Throw a Gersh Device close enough that the black hole sucks the generator away.

Then go to the Stamin-Up Lunar Lander area and activate the glowing computer terminal. You should see a symbol appear, and the first light on the mechanism will activate.

  1. Four buttons during a Space Monkey round

During a Space Monkey round, four red buttons appear near:

Juggernog
PhD Flopper
Speed Cola
Stamin-Up

Have one player at each button and press all four at essentially the same time. A successful activation gives you the second light.

  1. Pack-a-Punch clock

Launch the rocket so you can access Pack-a-Punch. It’s easiest to leave a slow zombie alive.

All four players need to stand together on the pressure plate in front of the clock showing 12:00, in the room just before Pack-a-Punch. Stay there for approximately 2 minutes.

When it completes, you’ll get the third light.

  1. Spell LUNA

Now use the Lunar Landers to collect the floating letters in exactly this order:

L → U → N → A

The route is:

Spawn → Stamin-Up = L
Stamin-Up → Spawn = U
Spawn → Speed Cola = N
Speed Cola → Stamin-Up = A

Once you’ve spelled LUNA, all four lights on the mechanism should be active.

  1. Free Gersh

Return to the mechanism near the Stamin-Up Lunar Lander/Claymore area. You’ll find a small glowing orb.

Throw a Gersh Device onto it. While the portal is active, hit it with the required upgraded Wonder Weapons and Matryoshka Doll. In the original Black Ops 1 version, the Easter Egg requires the Gersh Device, Matryoshka Doll, Zeus Cannon, and Porter’s X2 Ray Gun for this final sequence.

When you’ve put enough power into the portal, Gersh is freed and the Easter Egg is complete. In BO1, everyone receives a 90-second Death Machine reward.