While exploring the underground level of the Shattered Veil map, you may have encountered a Doppelghast locked behind a glass door. This area correlates to the Ray Gun Mark 2 Easter Egg, a part of the Main Quest. Here’s how to solve the Doppelghast code inBO6 ZombiesShattered Veil.

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How to open Doppelghast door in BO6 Zombies Shattered Veil

The first thing you need to do islocate the Floppy Disk, which you can obtain from a zombie with a lab coat that typically spawns around Round 11. This enemy also tends to appear in the underground area of the Mainframe Chamber with S.A.M.. Once you find the Floppy Disk, travel to the East Foyer (Stamin-Up room) and locate afax machineat the F3 coordinates. Interact with the machine, and a piece of paper with the words “Project Janus” should come out.

You’ll likely need to trigger the next round if the paper doesn’t appear. This scenario happened to me, and it was only resolved after I killed the last zombie in the round. As long as the item spawns, you may interact with the paper to read it. It will show you one of the three words: Yeti, Moth, or Crab. Remember your distinct word, which you’ll need to solve for theBO6 ZombiesDoppelghast code. If you need more help finding this crucial item, check out our deep dive into theFloppy Disk.

Doppelghast code on chalkboard

How to solve the Yeti, Crab, or Moth codename puzzle in BO6 Zombies

After you’ve noted your word, go to theNurseryat D3 coordinates (near the PhD Flopper perk). Here, you’ll find a chalkboard with a bunch of letters. I compared my playthrough with others, and the placement of these letters constantly changes, so my solution won’t be the same as yours. You musttranslate each letter in your codeword into numbers.The only way to solve it is by using the hints from the chalkboard.

Look at the letters used in your codeword, and you’ll see them grouped in different sections on thechalkboard. For example, my code was “Crab,” so I needed to find the letters unique to this word.

Fax machine for Floppy Disk

To determine the number for your distinct letter, you mustcount how many other letters are in its sub-group. So, for my playthrough, “C” was paired with nine letters, meaning nine is the code’s first part.

Continue with the rest of the codeword and note them down. Mine turned out to be 9729, but of course, your lettering and numbers will be completely different than mine. However, the codenames Moth, Crab, or Yeti will always remain the same.

Chalkboard location in Nursery

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Where to find the room with the locked Doppelghast in BO6 Zombies Shattered Veil

With the numbers still fresh in your mind, head down to theService Tunnelat the bottom-level E4 coordinates. This area is locked behind the door where you first met up with S.A.M. for the Pack-a-Punch machine. Open it by exchanging a certain amount of Essence, and you’ll immediately encounter the Doppelghast in the locked room.

Input your code in the keypad on the right to open the door. As you may expect, you’ll have to face off against the Doppelghast now, and you may want to leave the Service Tunnel to give you more room.

Translating chalkboard codename into numbers

Once you’ve defeated the Doppelghast in the Shattered Veil, go to its downed body to pick up the Shattered Arm. You must use it to progress further in theRay Gun Mark 2main questline.

Locked Doppelghast bottom-level location

Doppelghast locked in an underground room

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