ColdNorway

Now Who's the Idiot? Finish The Artifact

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

Untouchable Use only one self revive care package in the "Special Delivery" Special Ops mission.

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

The Boy Who Could Run Complete all Parkour Fever Challenges

Silence is Golden You completed The Brigmore Witches without alerting anyone

dr0n3d Complete the "Arctic Recon" Special Ops mission in under 3:30.

A Nightmare On Kusi Street Purge the Infestation on the Mainland

High Roller Complete the "Iron Clad" Special Ops mission on Veteran difficulty.

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!)

Together Till the End Be the last man standing

GD Parkour Instructor Complete all Parkour Fever Challenges at night

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)

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

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

Silence of the Llamas Expel the Infestation at the Farm

Deer in the Headlights Stab five stunned enemies in a row in the "Light 'Em Up" Special Ops mission.

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

Solino Chainsaw Massacre Eradicate the Infestation at the Compound

They Came From the Lake Liquidate the Infestation at the Lake

Things That Go Ka-Boom Learn how to craft Exploding Arrows

Demons on a Plane Obliterate the Infestation at the Crash

The Flying Dead Abolish the Infestation on the Mountain

Electric Whisper Learn how to craft Electric Arrows

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

Campaign Kitty Obtain all 108 medals on the original Arkham City campaigns (as Catwoman)

Sub Zero Complete the "Arctic Recon" Special Ops mission on Veteran difficulty.

Safari Tour Play at least one full round in every Official Map (Ranked Match)

Never Speak of This Again Finish Extermination

New Superpower Complete all China Rising Assignments

Moocifer Create a Cow Demon

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

Professional Reach Rank 10 (Ranked Match)

Discriminating Buyer Use exactly one of each care package in the "Special Delivery" Special Ops mission.

Lights Out Complete the "Light 'Em Up" Special Ops mission on Veteran difficulty.

Two's Company, Four's a Party Complete any Adventure level with 4 players.

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

Deliver This Complete the "Special Delivery" Special Ops mission on Veteran difficulty.

He Talked Too Much Defeat Emerson Miller

Flyswatter Destroy all helicopters in the "Vertigo" Special Ops mission.

Pinnacle Complete the "Vertigo" Special Ops mission on Veteran difficulty.

Street Fighter Complete all Dragon's Teeth Assignments

That Party was Ace Ace every Adventure level in The Journey Home.

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

Nightwing Revenge Obtain 78 medals on the original Arkham City and Nightwing Bundle Pack ranked maps (as Nightwing)

Robin Revenge Obtain 78 medals on the original Arkham City and Robin Bundle Pack ranked maps (as Robin)

To Jugger or to Jugger-Naut Kill all juggernauts after they land on Veteran difficulty in the "Vertigo" Special Ops mission.