Call of Duty's Season 4 Reloaded update for Black Ops Cold War's Zombies adds the new round-based map Mauer der Toten, and you can complete a main storyline quest to continue following Cold War's ongoing Dark Aether narrative. Here's our full guide to completing the Mauer der Toten main Easter egg quest.

Like most main quests in Zombies, Mauer der Toten will require you to power up the map, and open up most of the doors before really getting started with actual storyline quest steps.

Step 1: Turn On Power and PAP

Your first priority when spawning into the map is getting the power on. You'll need power for accessing new areas of Mauer der Toten and using perk machines. Afterwards you'll be able to reach the Pack-A-Punch. Here's our full guide for turning on the power and activating Mauer der Toten's Pack-A-Punch.