For this you will want to turn the power on and find the two trap parts, they can be found in the Server Room
and the Pecine Research
room in the lab area.Server Room possible locations
Directly on your right as you walk in lying on the wall.
On a trolley in the far right side of the room.
Directly underneath some computer terminals on the left side of the room.Pecine Research possible locations
On your right as you walk inside, inside a container.
Underneath the table that is on the back wall in the middle of the room.
Inside a locker on the far left corner of the room.
Once you have the two trap parts, you need to place them in the Side Passage and the Deserted Hallway areas. Once that's done you should try and get good weapons from the mystery box and activate Pack-a-Punch., Then start training zombies in the War Room
area. Also I recommend that you open up Pack-a-Punch.
Once you have sufficient weapons and Pack-a-Punched, you will want to keep an eye on the teleporter in the middle of the War Room and look for a chair
in the teleporter.
Once there is a chair in the teleporter go through it and you will be teleported to the Main Offices
area, then run down the corridor and buy the trap in the Deserted Hallway
Once you have done that make your way back to the War Room and repeat this process.Call of Duty: Black Ops 4 Shock Value Achievement Guide
I hope this helped, thank you.