WalkerH20

Tools of the Trade Craft the Virus Filter and Flare Gun in Survival mode.

Calling For Backup Call in 50 Scorestreaks in Multiplayer

None Left Standing In Der Eisendrache, kill every type of zombie using a minigun.

One Too Many In Zetsubou No Shima, throw up.

Zero Waste Restore a map from map pieces

Timing is Everything Kill the final 3 Ancestors within 10 seconds of killing the first Ancestor in Regular or Hardcore difficulty.

Rampage Kill 200 enemies with Empower in a single player campaign.

Always Hard Kill the final Ancestor with a relic active in Hardcore difficulty.

Riding Bikes Score with a bicycle kick

Heartbreaker Complete Lightbringer 1 time

Seeds of Doubt In Zetsubou No Shima, the one must be saved.

Popcorn Cook 50 zombies with the Magnetron in Infection.

Gold Star Crafter Craft a 1 star legendary mod, a 2 star legendary mod, and a 3 star legendary mod

There's someone in my house eating my birthday cake Keep your house undamaged for 5 minutes in Commando mode

Indirect Fire Kill 100 zombies with traps in Infection.

Don't You Die On Me Revive a teammate in Co-Op Campaign or Endgame

Conservationist Complete a story mission in the single player campaign without reloading a gun.

Eye Shine Find Pope Joe and let him perform the eye shine surgery.

Arena As Kirk, get a Gorn enemy to melee you

Assault With Battery In Zetsubou No Shima, electrocute a zombie with a shield.

Trials - Chapter XIV Complete all the trials for Chapter XIV

Vaporeyezed In Gorod Krovi, use the Gigant Beam to kill 20 Zombies in one activation.

Cartographer Visit every location in the game

Iron Breakers Complete the full Operation Iron Horse raid in a group of eight players.

Arbitrarily Exterminated Kill 2179 Xenomorphs

It's a Legitimate Strategy Get 3 Kills while defending an Objective Zone without leaving it

Cryogenic Slumber Party In Moon, complete Richtofen's Grand Scheme.

Bane of the Khazra Complete the Rise of the Khazra Dark Citadel.
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I Love the Corps! Earn Rank 60 as a Marine

All My Own Work Win a Match with Manual Controls (auto-switching must be set to 'Manual')

Ain't Got Time to Bleed Heal or regenerate 30 blocks of health in Survivor

Always Friendly Cross for a Friend to score

Largo Embargo Discover the Baron's sabotage

Librarian of Macragge Collect all Servo Skulls.

Crusade - Chapter XIV Finish the levels from Chapter XIV in Knight difficulty

Emblem Hunter Single Player: Find and destroy a Janus emblem.

Herbal Remedy In Zetsubou No Shima, use a plant to return to life.

Game Over, Man! Call in a rescue in Outbreak.

Love Tap Kill a Goliath with a melee attack in Infection.

We Didn't Need a Bigger Boat Complete Escalation and Disruption in Co-Op Campaign

Born Survivor Successfully survive and escape in Survival Mode.

Frontline Offensive Win 25 Multiplayer Matches

Night of Terrors Survive the Night of Terrors

Wonderful In Revelations, kill 10 enemies in one shot with each wonder weapon.

Climbing the Corporate Ladder Survive until round 25 in Infection.

Epic victory - Chapter XIV Finish the levels from Chapter XIV in Paladin difficulty

Smooth Operator Defeat Oz in Descent.

Destroyer Get 1000 Eliminations in Multiplayer

Objectively Good Capture an objective, build both fortifications and unlock both perks

Distinguished Service Medal Complete all Challenges