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