Black Ops 3 Der Eisendrache Easter Egg Complete Walkthrough

Conquering the snowy peaks of Griffin Castle requires a mix of sharp survival instincts and precise tactical coordination. The Black Ops 3 Der Eisendrache main quest remains one of the most celebrated cooperative puzzles in Call of Duty Zombies history, blending deep narrative implications with engaging gameplay milestones. Navigating this vast labyrinth successfully unlocks powerful arsenal pieces and reveals critical secrets about Group 935.
Awakening the Dragons and Claiming the Bow
Your grand journey begins by locating and feeding the three ancient stone dragon heads scattered across the fortification walls. Eliminating eight zombies directly beneath each dormant sculpture causes them to animate and consume the fallen target. Once all three structures are fully satisfied, the legendary Wrath of the Ancients hunting bow becomes available for retrieval near the Knight's Tomb.
Upgrading this foundational weapon is highly recommended to survive the increasingly aggressive waves of enemies in later rounds. Players can choose between unique elemental upgrade paths, such as the destructive Storm Bow or the crowd-controlling Void Bow. Securing these ancient weapons provides the necessary defensive capabilities needed to complete the intricate environmental trials ahead.
Navigating Time to Recover Hidden Relics
Progressing deep into the central narrative requires players to construct the localized Ragnarok DG-4 gravity spikes and assemble the vital Rocket Shield. Activating the castle's massive Death Ray defensive system lets you start an intense console memory matching sequence near the Clock Tower. Successfully completing this electronic puzzle unlocks a temporal rift that allows players to physically travel backward through the timeline.
While exploring the historical version of the laboratory, you must quickly locate a glowing stone tablet and a specialized Vril Generator rod before returning to the present. Depositing these retrieved antiquities into the central tomb chamber summons a protective Keeper spirit. This ethereal entity acts as your primary guide, marking distinct tactical zones around the fortress that must be continuously charged with zombie souls.
Surviving the Keeper and the Final Confrontation
Before launching your final assault against the corrupted forces, ensure your team is fully equipped with maximum ammunition and protective perks. Players must utilize their acquired gravity spikes simultaneously on the blue low-gravity floor panels located deep within the Undercroft. This action teleports your entire squad into a subterranean arena to face off against the massive, altered Boss Keeper.
The defensive encounter demands constant movement to dodge lethal area-of-effect shockwaves while managing aggressive Panzersoldat shock troops. Damaging the central boss is only possible when its chest core glows brightly following a failed area attack. After surviving several waves of intense physical combat, the entity will fall, rewarding you with the ancient Summoning Key.
Initiating Griffin Station Destruction
Returning safely to the surface allows you to insert the retrieved core key directly into the primary communication terminal. This final input triggers a catastrophic sequence that redirects the castle's long-range missiles directly toward the Moon infrastructure. Watching the ultimate cinematic conclusion rewards your squad with substantial experience points and completes this chapter of the saga.