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A Nightmare On Kusi Street Purge the Infestation on the Mainland

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

The Harder They Fall Defeat the Apex Warrior in "The Pipeline"

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

Medal of valor Gold rating on every level

Collector Acquire all items available in normal time attack

Stroke of Luck Complete "Stroke of Luck" challenge

Relieved of Command Kill the general commanding the Moscow defenses

Cracker Complete "Cracker" challenge

Feeding Time Feed the Narwhal.

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

Specter Officer Reach max level with one class in the Cooperative campaign.

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

Z-Genocider 2: Genocide Harder Kill 53,596 zombies

Packrat Collect 50% of Data Drive files in the Bloodline expansion

Icebreaker Equip the Icebreaker.

The Pinball Effect Complete "The Pinball Effect" challenge

A for effort Attain a Time Trial star rating of 35

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

Platinum Trophy Collect all the game's Trophies

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

The Plot Thickens Complete your investigation of Boltaire Museum.

Under The Ice Finish the main quest in The Pale Reach.

Blood Bank Kill 10,000 enemies

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

Death of Comedy Use every type of novelty weapon on a zombie

Shadow Vigilante Master the Shadow Vigilante Dark Knight track

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

Silence of the Llamas Expel the Infestation at the Farm

Out of the Bush Complete "Out of the Bush" challenge

Headshot Bonanza Complete "Headshot Bonanza" challenge

Fresh Fish Have 5 ice blocks in your cargo.

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

No Loose Ends Eliminate the leader of the Raven's Rock faction

Solino Chainsaw Massacre Eradicate the Infestation at the Compound

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

They Came From the Lake Liquidate the Infestation at the Lake

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

Rare and Exceptional Purchase Armor, a Charm, or Vanity Gear from Masujiro the Melodious in New Game+.

It's All History Read four plaques in Boltaire Museum.

Demons on a Plane Obliterate the Infestation at the Crash

The Flying Dead Abolish the Infestation on the Mountain

Just Another Day at the Office Complete the campaign for the first time

Pegleg Fulfilled Your Restroom Obligations

From The Black Depths Catch the Colossal Squid.

Classless Win a match without using your Class Ability.

Poly Cruncher Complete "Poly Cruncher" challenge

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)

Beast Friends Forever Paint Trico's entire body.