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CQB Expert Kill 50 players with a shotgun, a submachine gun, and/or a pistol.

Preemptive Strike In Classified, kill 50 Nova 6 Crawlers without letting them explode in a single game

Irresistible Force [STORY] Clear with 12 different characters.

Flesh Eater [DOJO] Defeat a ghost character 50 times.

First Come, First Served Loot 50 items from the carepackage.

Enforced Freedom Kill 100 Zombies with explosions from Fire Works

I'm in charge now Defeat Nerve

Zombiepult In Gorod Krovi, launch 10 zombies into the air at the same time.

For The Good Of All In Revelations, the Key must be opened.

Ground Control In Moon, prevent each excavator from breaching the base in one game.

MEAT IS MURDER Activate Bubby.

Proof Of Your Victory Get to C rank for the first time in Ranked Match.

Valley Blue clear Complete all Blue Valley maps (Any medal)

Coast 2 Coast Cross the water with a teleport grenade in Descent.

Silver Lining Complete the Silver stage of all Skill Games

The Greatest Cape Stay airborne with the Hero Cape for 15 seconds.

Six Digits?!? Kill 100,000 zombies.

Hot-Footed Hero Complete Cacti Canyon in under 5 minutes.

Crawl for Help In Classified, while in last stand use a teleporter and then get revived in a single game

Blackout Historian In Blackout, unlock Reznov, Mason, Woods and Menendez

The Crossroads of Tragedy Fight 100 matches online.

The Fires of Raven Reached ending: "The Fires of Raven."

Steady Hand Kill 50 zombies with a Headshot

Drop The Bald Defeat Lex Luthor.

Predator Meets Prey Counter an opponent's attack 10 times.

I Live…Redux Incapacitate, hotswap, and revive yourself.

Little Lost Girl In Origins, release Samantha.

How low can you go? Hit 18 enemies with a single shot of the LZ-52 Limbo in Carrier.

How the mighty have fallen! Defeat Oz... again in Descent.

Target Score Junkie! Beat the target score in every Chapter (Points Count Mode).

On A Roll Complete Fast Food without losing a ball

Survival Of The Fittest Reach Round 30 on a Survival Map

Help From My Friends Get at least a Bronze medal on 10 different co-op challenges.

Indefatigable [STORY] Clear with 16 different characters.

A Dark Doorway Recover the Psi Gate

The Most Dangerous Game Play in a multiplayer match

Transcend All You Know Win 50 matches online.

Soul Powered Use the Soul Totem of Casting 50 times.

The Cursed Simon Belmont Complete Castlevania

This Damn Island In The Darkest Shore, explore the entire island.

Mission You completed your first Order

Top Marks Get all the answers right in the Professor's three quizzes

Square peg in a round hole Attempt to use an improvised battery in "Copper World"

Senseless Axe of Violence In Blood of the Dead, kill 5 zombies with the Hell's Redeemer before it starts its return

Observer View 50 replays in the Replay Channel.

Winning Win a game

Giant Slayer Defeat a Ravager and a Squall Golem within 5 seconds of each other.

Pent-up-agon In Classified, complete 5 consecutive rounds without leaving the war room elevator in a single game

Meat Over Metal Kill a Sectopod on the same turn you encounter it (in Single Player)

Exordium Complete Episode 1