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Sliced and Diced In Shaolin Shuffle, Pack-A-Punch the final Weapon.

Student No More Reach rank 25 with one class.

Master SMG Improve SMG to maximum in Workbench

The Best Offense is a Good Defense In Ancient Evil, kill a Gegenees using only Apollo's Will

Electromagnetic Awakening Party In Alpha Omega, begin Nikolai’s Grand Scheme

Pyromaniac Build 10 Flamethrower Traps in one game

Deadly Spinner Build 2 Deadly Spinner Traps in one game

Master M134 Improve M134 to maximum in Workbench

Mile High Jug In Tag der Toten, break the jar on top of the lighthouse with the Strife

Master Deadly Spinner Improve Deadly Spinner to maximum in Workbench

Greek Tragedy In Ancient Evil, finish what was started

Extra Tortured Path In The Tortured Path, successfully escape from every map without using Blitz

Maximum Regeneration Improve the skill "Regeneration" to the maximum

Master Barricade Improve Barricade to maximum in Workbench

Master Flamethrower Improve Flamethrower to maximum in Workbench

Maximum Health Improve the skill "Health" to the maximum

Weapon Lord In The Frozen Dawn, kill 100 zombies with each Raven Weapon in a single match.

Worth Its Wait Obtain two golden katana

Master RPG-7 Improve RPG-7 to maximum in Workbench

David, Meet Goliath In The Tortured Path, defeat the Guardian solo.

Bait and Switch In Attack of the Radioactive Thing, restore and use all traps.

Master Shotgun Improve Shotgun to maximum in Workbench

Master AK-12 Improve AK-12 to maximum in Workbench

Master Turret Improve Turret to maximum in Workbench

Maximum Resistance Improve the skill "Resistance to damage" to the maximum

Speed Demon Completed all Races, earning at least a medal in each.

Maximum Invulnerability Improve the skill "Invulnerability" to the maximum

Shopping Spree Wear an Unlocked item in any game mode

Loremaster Collect all Intel in Co-Op Campaign and Endgame

Earthing Kill the Electric zombie by shooting at his feet

Shaolin Skills In Shaolin Shuffle, max all Chi abilities in a single game.

Ghosts Unyielding Complete a Survival mission on Gold difficulty or higher.

Acid Wars Kill 20 Acid Zombies using SMG

Master AWP Improve AWP to maximum in Workbench

Seasoned Hunter Completed all Standoffs, earning at least a medal in each.

Stars Unseen Reach Knowledge Rank 10

Chug! Chug! Chug! Chug! In Alpha Omega, buy all four perks in any order in 35 seconds or less

Going Green In Tag der Toten, open all paths without turning on the power

Friends Forever In The Beast From Beyond, fully restore N31L.

Experimental Prototype In Alpha Omega, construct a Ray Gun

Pack Your Bags In Tag der Toten, pack a weapon in all Pack-a-Punch locations in a single match

1,000 zombies Kill 1,000 zombies in one game

Large-scale game Kill 1,000 zombies using M134

Lifeline In Tag der Toten, use all the ziplines without killing an enemy or going in to last stand in a single match

Deadly Assassin Completed all Assassinations, earning at least a medal in each.

Researcher Get Deadly Damage from Traps

Abnormal Energy Bill In Tag der Toten, light up all the totems in a single match

Coin-Op In Shaolin Shuffle, complete Skullbuster.

Soul-Less In Attack of the Radioactive Thing, recover the piece of the Soul Key.

Multi-Buster Bust 2 or more players in the same hand