backblast

Won armed Complete a level using only one hand

Special Staff Recruiter Assembled all special staff members.

That looks tasty! Nicely cooked a ration.

Full Master Earn all Gold Medals available in Mastery Challenge

Now Who's the Idiot? Finish The Artifact

Vic Vos Reached a total of 20,000 or more Camaraderie.

Going Down Completed Mission 05 in campaign mode.

Fertilizer Man Kill 200 zombies in a single game. (Map Pack 2 only)

Big Brawler Get 10 consecutive zombie melee kills before Insta-Kill expires. (Map Pack 2 only)

Nightmare Descent killer Finish 'Nightmare Descent' on Insane

New 'n' Hasty Rescue every Mudokon with an overall Best Time of 3:00:00 or less

Against All Odds Mudokon God, Mudokon Saviour

For my next trick Get killed by a sawblade

A Nightmare On Kusi Street Purge the Infestation on the Mainland

Perk-a-Holic Have all four perks simultaneously active in a game of Nazi Zombies. (Map Pack 2 only)

Long Board Ride the Hoverboard for a total of 10,000 meters (electro-mag cables don't count!)

40 Knives! Kill 40 zombies with the bowie knife. (Map Pack 3 only)

Perkaholics Anonymous! Survive until round 20 without buying a single Perk. (Map Pack 3 only)

Frequent Flyer! Use the teleporter 8 times. (Map Pack 3 only)

Guilty as Charged Complete a Murder Circus Finale with Chief Justice.

Gimme Five Attain Level 5 with all Murder Circus contestants.

Most Dangerous Game Complete a Murder Circus Finale with Artemis.

Soul Survivor Reach round 15 in Nazi Zombies without getting revived. (Map Pack 2 only)

Viva La Reina Complete a Murder Circus Finale with Consuela.

Living the Dream Complete a Murder Circus Finale with Daniel Li.

Interception Grapple to an Agent who's reeling through the air, and reel-kick them

Silence of the Llamas Expel the Infestation at the Farm

The Power of Rico Compels You Exorcise the Infestation at the Church

I'm dead serious Threw a chaff grenade at ZEKE (single player only).

Solino Chainsaw Massacre Eradicate the Infestation at the Compound

They Came From the Lake Liquidate the Infestation at the Lake

The Flying Dead Abolish the Infestation on the Mountain

Demons on a Plane Obliterate the Infestation at the Crash

Sébastien Loeb Rally Challenge Complete the "Sébastien Loeb Rally Challenge" Special Event.

Rookie of the Year Earn a B Rank in the Trial of Initiation

The 40-Yard Digital Dash Breach: Succeed 3 Data Sphere deliveries.

Never Speak of This Again Finish Extermination

Pack Addict! Upgrade 5 weapons at the Pack A Punch Machine. (Map Pack 3 only)

Moocifer Create a Cow Demon

Just A Pawn Completed Mission 06 in campaign mode.

Silent Sniper Complete The Last Yardbird as Silent Assassin.

Barrel of laughs Kill 20 enemies with barrels

Just Like Old Times Dispatch the professor with a shot to the groin.

Double Trouble Complete The Pen and the Sword in Multiplayer.

Acquire Waffle Weapons! Obtain the Ray Gun, DG-2, and the Monkey Bomb at the same time in a game. (Map Pack 3 only)

He Talked Too Much Defeat Emerson Miller

You're Not Worthy As My Opponent Breach: Send 3 Challenges.

A Chance Encounter Completed Mission 07 in campaign mode.

Deadhead Get 150 zombie headshots in a single game. (Map Pack 2 only)

Two for One Complete Crime and Punishment in Multiplayer.