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

Factory Zero You survived Hei Zhen Zhu and RBS using no Praxis kits, weapons, grenades or mines. Whoa.

Seal the Deal Complete a Triumph Seal.

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

Keeper of the Vigil Saved Vigil's Keep ("Dragon Age: Origins - Awakening" expansion)

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

Pursuit of Knowledge Filled 80% of the Datalog.

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

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

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

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

Bane of Thedas Handed victory to the archdemon by killing Ferelden's last Grey Warden. ("Darkspawn Chronicles" downloadable content)

Vendetta Destroyed the career of Guard Captain Eams. ("Leliana's Song" downloadable content)

New Superpower Complete all China Rising Assignments

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

Gest - Chapter XIII Finish the levels from Chapter XIII in Warrior difficulty

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

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

Wishing for the Best Complete the "Last Wish" Raid.

I came in like a Resogun Accumulate a total Wrecking combo of 1,000 in Demolition mode

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

Extreme Manhunt Complete a Seasonal Manhunt mission on Challenge difficulty or above.

Master of the reliquary Gather all the fingers of Frankenstein

Street Fighter Complete all Dragon's Teeth Assignments

A Time of Wood and Stone Gathered the lost lore of Cadash Thaig ("Witch Hunt" downloadable content)

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

New Threads Use a new Title and Icon, and fight in one online match. Right on!

Don't make me pull the trigger! Survive for 5 minutes in Demolition mode

ARCHIVIST Collect all documents

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

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

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

Skirmish - Chapter XIV Finish the levels from Chapter XIV in Squire difficulty

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

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

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

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

Burning times Complete a level on Master difficulty without using bombs, overdrive or boost with a custom ship

Reaper Defeated the Harvester ("The Golems of Amgarrak" downloadable content)

It's a Trap! Kill at least one zombie with three different traps in a single round. (Map Pack 2 only)

King in the North Complete all Final Stand Assignments

Campaign Wonder Obtain 114 medals on the original Arkham City and Robin Bundle Pack campaigns (as Robin)

Campaign Nightwing Obtain 114 medals on the original Arkham City and Nightwing Bundle Pack campaigns (as Nightwing)

LEGACY Complete all recordings

Let it Snow Receive the Extreme Environment Suit (XE Suit)

Drilling for Justice Assemble the cryonucleation tunneller - the cryodrill

Flipper Flip the level 6 times in Protector mode

Stalact-tactician Takedown 2 enemies with one stalactite

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

Such a Flirt Asked out by two girls.