Call of Duty: Black Ops 4

For all the achievements in Call of Duty: Black Ops 4 Zombies, besides the ones relating to the quests, you can use casual mode, but cannot use mutations. My setup for this achievement was:
-Classified; Casual; classic.
-Full bot squad
-ICR and Ray Gun

The easiest way to get this achievement is to hit the box a couple of times, and get guns you feel comfortable with, and also one you need to level up for Then buy your way to the large elevator on the lower levels of War Room. Go down the elevator and sit in it looking towards labs. If you stay here long enough this should net you This is based on how well the bots behave, Ive had better luck with them staying in the elevator if it's on the Labs level.

Alternatively, if the box is in one of the two locations on the Office levels, you can get a decent enough set up with your bots to net you

Now for this you will want to get really good weapons from the mystery box such as the Ray Gun and the Monkey Bombs.

The main place where you'll want to train the zombies is in the War Room, and you will want to buy the debris that's under the stairs and the debris that's opposite the stairs.

Do not buy the new door on the right side of the War Room that is near where the ICR-7 is located.

Also I recommend that you use the Death Machine specialist as the level 2 upgrade will allow you to fire grenade launcher shots at the zombies. The level 3 upgrade is good because it allows you to throw your death machine on the floor and deploy a tactical nuke.

I highly recommend that you get your specialist weapon up to level 3 if possible. A good wall weapon to buy is the ICR-7 which is where Juggernaut used to be on the Five map.

Call of Duty: Black Ops 4 Power Struggle Guide

I hope this helped you out, some feedback would be great.