Uploaded February 2021 | Updated September 2026, 2 weeks ago

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Call of Duty: Cold War Zombies - Firebase Z Rai K-84 Wonder Weapon Build Tutorial (Gameplay Walkthrough)

Here is an uncut gameplay guide to build the new wonder weapon, the Rai K-84 on the new map Firebase Z. It has a special tornado-shot version with D-Up.

1. RAI K-84 Blueprints - found on the wall in the "Weapon Lab"
2. Eyeball - after you find the blueprint you can get the eyeball from the "Scorched Defense" area from a corpse near a tank to the right
3. Locker Key - With the eyeball then you can go back to where the blueprints were and use the eyeball on the retina scanner to open the drawer and get the keys
4. Barrel Assembly (Lockers Piece) - use the keys to open the lockers in bunkers 1 and 2 which will make Mimics appear, one mimic will drop the Barrel Assembly piece
5. Aetherium Converter (Dart Board Piece) - Now you can activate the computer to see the sequence you need to shoot the dart board 3 times and then the bullseye to get the piece
6. Empty Power Cell / Charged Power Cell (Mangler Mag) - you have to shoot a manglers hand off, then kill it and he will drop the empty power cell THEN you need to take it to the table to the right of the weapons upgrade to charge it for 2 rounds