How To Beat Der Eisendrache And Complete The Main Easter Egg

12 September 2026 | 32

Mastering the Der Eisendrache main Easter egg is widely considered one of the most fulfilling achievements in Call of Duty Zombies history. Set within a formidable Austrian castle, this map requires players to combine intricate quest steps, elemental bow upgrades, and precise team coordination. Following a structured strategy will help you conquer the boss fight and execute the quest efficiently.

Upgrading the Wrath of the Ancients

The foundation of any successful run begins with obtaining and upgrading the elemental bows. Players must first build the base Wrath of the Ancients by feeding the three dragon heads located around the castle map. Once acquired, players should immediately split tasks to upgrade into the Lightning, Void, Fire, or Wolf bows depending on team preferences.

The Storm Bow remains a top choice for its unmatched crowd control abilities, especially during high-stress objectives. Completing these upgrades early ensures your team possesses sufficient firepower before advancing to time-sensitive steps.

Travelling Back in Time with the Teleporter

Initiating the main quest line requires activating the death ray and traveling back in time using the modified teleporter. Inside the past realm, players must quickly collect the fuse and record the safe combination before being returned to the present. Inserting the fuse into the death ray and entering the code into the computer unlocks key components needed for the keeper step.

Timing is critical during this phase, as missing any detail in the past forces players to wait until the next round to try again. Clear communication among team members prevents costly delays.

Escorting the Keeper and Filling Soul Spheres

Once the Golden Device is secured, players must summon the Keeper spirit to begin the soul-collecting ritual across the castle grounds. The Keeper moves between four distinct locations, creating a glowing circle where zombies must be defeated. Each location requires kills using a specific elemental bow indicated by the colored ring aura.

Managing ammo reserves during this sequence is essential to avoid getting overrun. Keeping a GobbleGum like Cache Back or In Plain Sight ready can save your team during challenging waves.

Conquering the Boss Fight in the Undercroft

The quest culminates in an intense boss fight arena beneath the castle against the Keeper demon. Players must place the Ragnarok DG-4 traps in the center circle when the boss prepares its devastating wipe attack. Trapping the boss exposes its chest chest core, allowing players to deal heavy damage with upgraded bows and high-damage weapons.

Between damage phases, focus entirely on dodging panzers and minion waves while maintaining situational awareness. Defeating the boss automatically finishes the quest and delivers the epic end cinematic reward.