The Rabenherz is a quest item featured in Call of Duty: WWII Nazi Zombies map The Final Reich. To begin this quest line, players must have already built the Tesla Gun as well as the 4 other variants of it, obtained the Red Talon Sword, aquired teh 3 Spin Tops and powerd the Gramophone.
- Activate the Gramophone and count the clicks until there is a small break. There will only be 1-5 clicks and only 4 sequences of clicks needed.
- Once the player has the 4 numbers, go to the Voice of God and start inputting the numbers with the Bloodraven.
- Once all numbers have been inserted, interact with the machine.
- The player will now have to shoot a chandelier using the Upgraded Tesla Guns in a specific order that changes per game (this step cannot be failed so try as many times until successfully completed).
- Once the player has successfully shot the chandelier with all 4 Tesla Guns the Hilt of Barbarossa will be spawned and must be interacted with. Once doing so, the Boss Fight will begin and players will have to successfully kill Klaus Fischer to complete the Easter Egg.