This is possible to do when you first get Klaus, but I find it easier to remember the order this way. Bring him to the Sewer Access area and command him to stand in front of the large blank wall at the top of some steps. (Image credit: Treyarch) Use the secret lab Only one of you can equip it, but teammates can get another from the mystery box or trials if you’re feeling lucky. This should open the safe and the Mauer Der Toten CRBR-S Wonder Weapon will be inside. In solos mode, zombies will give you a chance to input the code, but in squads your pals will need to have your back. The numbers you saw are just digits, so for example if you saw '2' and '1', input ‘21’ on the corresponding safe dial. Remember to write these numbers down then go back to the room where you got the hands for Klaus, in the hotel. To the left of the two posters by the main entrance.Top-left hand side of the long archway.

Below the middle of the large brown pipe on the wall.On the bottom of the small staircase leading up to the next room.Make a note of them when you spot them: they’ll show up in green when you point at them, and the areas are labelled 1, 2, and 3. Here’s where you’ll need to go, along with the three possible locations for the numbers in each spot.

To get the CRBR-S Wonder Weapon, you’ll need to go to three places on the map and look around for some numbers that’ll show up under your Blacklight. (Image credit: Treyarch) Get the Cold War Mauer Der Toten Wonder Weapon He’ll break it open, allowing you to take the Blacklight from inside. Once he’s under your control, go to the Switch Control Room and get him to stand in front of the tall, thin locker. Go to the Safe House in the basement and give the components to Klaus, who can be found chained to a chair. Kill one and pick up the battery from their corpse. Now, wait until a Krasny Soldat shows up-they’re the big terrifying enemies with the flamethrowers who’ll usually start roasting you at round 10.

Take the hands from the dead body on the bed.

Brain Rot a zombie next to the boarded-up wooden door and the zombie will break it down.

Go to Room 305 in the hotel area of the map.

Use the Pack-A-Punch machine to put Brain Rot on one of your guns.

Here’s how to get the Cold War Mauer Der Toten Klaus hands: In the top-left of your screen next to your minimap, you’ll be able to see where you are and refer back to this guide. They’ll all involve door-opening and keeping track of your location. To resurrect Klaus you’ll need to carry out a few steps.

Call of duty cold war zombie easter egg