D_BR

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

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)

Ultra, Man! If yer gonna fight, give it your all, pal. Performing 100 Ultra Combos oughta do it, eh?

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

Pea Shooter Kill a Rhino with only a pistol in Nightfall in Regular or Hardcore difficulty.

Bug Spray Earn the Distinguished Flying Service Cross

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)

Heavy Medals Earn All Medals

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

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

Hard Times To escape death is to beat the strongest of the strong. Finish Arcade Mode on Hardest, kid!

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

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

Gran Turismo Rally Complete the "Gran Turismo Rally" Special Event.

Dream Race Win the ultimate three-way showdown between a Ford Mark IV Race Car, a Ferrari 330 P4 Race Car and a Jaguar XJ13 Race Car.

Great Success Gain S+ on all U.S.S. missions on Veteran or Professional difficulty

Tomb Raider Collect all relics, artifacts and weapons

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

Team Player A 1-on-1 fight is fun, but it's more fun with friends! Try fighting in a Team Battle!

Happy Trails Complete By the Trail of Our Dead

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.

Speed Slayer Kill the Breeder in less than 5 minutes in Nightfall in Regular or Hardcore difficulty.

Throttled Survival Kill the Breeder while using a Relic in Nightfall in Regular or Hardcore difficulty.

Moving On Up Ya need to do anything to reach the top of the food chain! Let's see a Rank Up via Ranked Match!

No Compromise, No Regrets You battled for Caracas

Survived Mayday Kill the Kraken for the first time in Mayday in Regular or Hardcore difficulty.

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

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

The Hero and the Madman You completed Mercenaries 2

Duct Tape FTW Create all combo weapons

Targets Acquired Get past the first gate in Awakening in Regular or Hardcore difficulty.

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

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

Battle Master Only winners can attain such beauty. Win 30 matches online and I may share my beauty secrets.

Postmaster Complete any outpost by activating all of the generators in Regular or Hardcore difficulty.

High Score Score 800,000 points in one game -- with Game Settings set to Hardcore.

Zombie Genocide Master Kill 72,000 zombies

Three For The Road In the pursuit of strength, one must have a goal! In Endless Battle win 3 matches in a row.

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

Big Game Trapper Use a hypno trap to turn a Rhino friendly in Mayday in Regular or Hardcore difficulty.

Undiscovered Truths Find all the intel hidden in Nightfall.

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

Gotta Catch'em All Collect all secrets.

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

Chuck Greene: Cross-dresser? Change into all pieces of clothing in the game

Super, Man! To battle is to win a fight with overwhelming strength! Show me you can do 100 Super Combos!

Hot Pants Complete I Now Know Why You Cry