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

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

Mental Unblock Get a 350000 Drift Score in Mental Block with Ken's car

Baranor the Conqueror Complete the Desolation of Mordor with a Gold Rating.

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

Feel My Wrath Kill 250 enemies using Melee Fury attacks.

Warming the Gloves Make 10 saves in 1 Arena kick-about

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

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

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

Electric Whisper Learn how to craft Electric Arrows

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

Moneybags Have 15000 credits in the bank in Outbreak.

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

40 Knives! Kill 40 zombies with the bowie knife. (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)

Burgle Burgle Burgle Steal 10 kills from a teammate in Outbreak.

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

Beast Friends Forever Paint Trico's entire body.

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

All Talked Out Hear every hint.

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

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

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

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

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

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.

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.

Untouchable Emissary Reach the end of the game without a game over.

I Got This In The Darkest Shore, survive the initial beach rush without using any machine gun turrets.

Burgertown Escort Service Rescue 1 survivor in Infection.

Undiscovered Truths Find all the intel hidden in Nightfall.

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

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

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

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

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

Come On And ... Slam 10 zombies at once in Outbreak.

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

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

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

The First Harmonic Score your first harmonic in Needle Hills.

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

Ryder owns Goliath Complete the Plains of Goliath.

Alright, Alright Survive until round 10 in Infection.

Egg-stra Devastation! Complete the Egg-Stra XP challenge and then destroy a hive in the Devastation DLC package.

Lightning Emissary Reach the end of the game in 5 hours or less.

Survivor Survive until Round 25 in Outbreak.