Headshot a Zombie post resurrection.
Complete Rotten Coast on any difficulty.
Complete Deeper than Hell on any difficulty.
Complete Blood Count on any difficulty
Complete 12 consecutive Waves and escape from the Horde Map "Undead Wood".
Complete Terror Lab on any difficulty
Kill 50 Zombies in a row without missing a shot.
Complete 4 level sections without using a medkit.
Complete Dead Ahead on any difficulty.
Complete Damnation Valley on any difficulty.
Revive other players 50 times.
Kill 50 enemies that are actively attacking other players.
Kill 20+ enemies with 1 explosive.
Get an unbroken 10-headshot streak.
Sever 10,000 limbs.
Get 3 headshots with one bullet.
Complete 12 consecutive Waves and escape from the Horde Map "Caged Fear".
Complete 12 consecutive Waves and escape from the Horde Map "Final Departure".
Kill a Suicider with his own explosives.
Complete Return to Hell on any difficulty.
Complete Hell Base on any difficulty.
Complete 12 consecutive Waves and escape from the Horde Map "Death Collector".
Complete All Roads Lead To Hell on any difficulty.
Complete Ragnarök - Part II on any difficulty.
Complete Ragnarök- Part I on any difficulty.
Complete 12 consecutive Waves and escape from the Horde Map "Hell's Cauldron".
Complete Abaddon Asylum on any difficulty.
Complete Alpine Blitz on any difficulty.
Complete 12 consecutive Waves and escape from the Horde Map "Frozen in Fear"
Complete Terminal Error on any difficulty.
Complete the Campaign in Nightmare mode.
Complete 12 consecutive Waves and escape from the Horde Map "Graveyard Shift".
Complete Dead Zeppelin on any difficulty.
Complete Molten Nightmare on any difficulty.
Kill 5000 enemies of any kind.
Kill 20 zombies with Electric Punch Special Attack.
Complete consecutive 12 Waves and escape from the Horde Map "Into the Darkness".
Perform all Heroic Actions.
Complete consecutive 12 Waves and escape from the Horde Map "Villa Della Morte".
Complete consecutive 12 Waves and escape from the Horde Map "Dead in the Water".
Complete consecutive 12 Waves and escape from the Horde Map "The Bitter End".
Reach wave 6 on any Horde Map without picking up a Primary or Secondary weapon.
Complete 20 waves in a row on any Horde Map.
Survive 144 waves in total.
Reach rank 5.
Reach rank 50.
Reach rank 100.
Complete Death Canal on any difficulty.
Earn a Gold Medal on any chapter.
Complete a level with 5 Gold Level Perks equipped.
Complete the weapon mastery for any weapon.
Find all Journals, Comics, and hidden Weapon Upgrade Tokens.
Kill all Zombie Hand collectibles.
Finish a level with 5 or less zombies resurrecting.
Drop a pallet of Artillery Shells on a Zombie.
Complete Zombie Zoo on any difficulty.
Perform a takedown on a Blind Screamer.
Kill a friend who has resurrected as a zombie.
Kill 5 Heavies with Takedowns.
Kill a Sniper whilst they are jumping between vantage points.
Kill a Zombie using the Blade Melee Special Attack.
Kill 3 enemies with one blast from a Preacher.
Change your characters appearance, such as with a hat or costume.
Perform 50 Takedowns in total.
Complete the weapon mastery for 3 weapons.
Complete Meat Locker on any difficulty.
Complete every campaign level with a full team of four players.
Complete the Campaign on Hard difficulty.
Complete the Campaign on any difficulty.
Complete Hell Machine on any difficulty.
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