Released August 6th.
* set in a secret Nazi research facility
* featuring the Pack-a-Punch machine, a device capable of upgrading weapons at the touch of a button
* teleporters to escape
* Perk machines and electric fences return
* New weapon: Monkey Bomb – a monkey takes a bomb to the zombies and explodes
* New weapon: Bowie Knife – 3000 points. Larger and wider. One-hit-kill until Level 16.
* 10 new Achievements/Trophies
Achievements/Trophies:
* Elevate Your Senses – Activate the Fly Trap.
* Locksmith – Open all the doors in the map.
* 40 Knives – Kill 40 zombies using the Bowie knife (a special, new weapon that will cost 3000 off the wall)
* Der Electrician – Link all teleport pads before Round 7.
* Frequent Flyer – Use the teleporter 8 times.
* Wacker Packer – Upgrade any weapon using the Pack-a-Punch machine.
* The Might of the Monkey – Use the Monkey Bomb.
* Perkaholics Anomynous – Survive until Round 20 without buying a single perk.
* Acquire Waffle Weapons – Obtain the Ray Gun, Wunderwaffe DG-2 and the Monkey Bomb at the same time in a game.
* Pack Addict – Upgrade 5 weapons at the Pack-a-Punch Machine .
Trailer for Der Riese: