This can either be done in solo or CO-OP.
Before starting I would recommend putting the GobbleGum
Immolation Liquidation in your GobbleGum pack, since you need the
WaveGun for a step of this Easter Egg. Also I would recommend turning up your brightness in game to see better as some parts of this map are quite dark compared to BO1.
Step 1Turn on the power.
Step 2You need to play a game of Samantha Says inside the spawn area near the RK5 wall buy (left door from the room where quick revive is) Basically for this you just have to follow the colour pattern the machine gives you. (red,green,blue,yellow). Every time you complete a pattern an extra colour will be added i.e. (green,) (green, yellow,) (green, yellow, blue.) When this has been completed all four screens will be flashing green constantly.
Step 3You need to hack one out of the four switches along the wall next to the stairs leading up the 3rd floor of the lab. This will cost you 500 points. Once that is done you have 60 seconds to run around the three different lab floors to find the four consoles that have green lights on them.
Tip for CO-OPWhen doing this step you can split up and search the other floors for the switches, meaning that you cover more ground in less time.
Once you've hacked the four consoles, you need to go back onto the 2nd floor to the switches on left the wall near the stairs leading to the 3rd floor. You then need to hold
on all four switches within 3 seconds. Can be done by one person by holding
and quickly moving to each one. However, it is easier with two if need be.
Step 4You need the Excavator to breach tunnel six, it is completely random i.e. you could get tunnel 11 or Bio Dome first, if that's that case then let it breach and don't hack the console to make it go away. This will mean that there's a 50/50 chance of you getting tunnel 6 the next time the woman announces an Excavator is going to breach.
Once Tunnel six has breached use the Hacking device on the Left terminal by the Left door in the spawn area (Quick Revive room) Then proceed your way through tunnel six to find the floating orb on the floor near the Kuda.
Step 5You need to bring the Orb to the MPD, you can do this by either knifing or shooting the Orb with regular weapons to make it move (WaveGun won't work), then follow it around tunnel six until it get's stuck on the floor, knife it, follow it for a bit and it will get stuck on the wall where the L-CAR 9 is, it will be above some containers on the wall.
It will then go outside on top the Satellite (most left Satellite from where you'll come out), then shoot it with the WaveGun. The Orb will then fly towards tunnel 11, once the orb is inside it will get stuck on the right side of the first room you enter on some pipework. It will then go into the Stamin-Up perk room and get stuck in the ceiling on the right side of the room.
Shoot it with a weapon and it will go into the final room and land on some canisters on the right side of the door leading to the power. The orb will fly to the MPD. Once that's happened a tube on the right side of the MPD will rise from the floor.
Step 6This final part involves killing zombies near the tube to fill it up with zombie souls. You need to kill 25 zombies to fill it up completely. Once that is done you'll hear a distinctive sound and will need to push the switch that looks like a regular power switch on the left side of the MPD. You will then need to wait a few seconds for the MPD to open revealing Samantha then the achievement will unlock when you've received the 90 second Death Machine.
Bonus TipIf you have used any useful GobbleGums you can keep them by pausing the game, and quitting Black Ops III.
If you are still struggling, feel free to use this video I made as a reference.
Cryogenic Slumber Party Achievement Guide
Hope this was helpful.