Apantenco

Dirty Work Unlock the level 4 engineering RIG.

Moving to the 'Burbs Complete the Third Act

I’ve seen some things… In Kino Der Toten, visit every location the teleporter can take you to.

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.

Next Step: Bullet Belt Fire 300 Bullets

Did anyone survive? Complete Ignition Mode.

Go for Gold! In Onslaught, acquire seven gold chalices

Get Out of Dodge Complete the Final Marked Destination on the Map

The Hunted Becomes the Hunter Kill 5 Walkers in the Cabot Ridge Creek Bed

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

Pack-A-Punch-ectomy In Revelations, recover the Pack-a-Punch machine from its abductor.

Run 'N' Gun Make a three-pointer off of a fast-break in a non-simulated game.

Moneybags Have 15000 credits in the bank in Outbreak.

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

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)

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

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

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

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

In the Belly of the Beast In Zetsubou No Shima, survive getting consumed.

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.

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

Stop the clock! Successfully complete any hack on the Leaderboards.

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

Taking Flight In Gorod Krovi, ride a Dragon.

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

Der Meisterbogenschuetze In Der Eisendrache, obtain all of the ancient bows.

In a Top 10, maybe # 9... Beat the Fifth Boss

Still Not Buying a Hybrid Consume 250 Fuel

Chimp on the Barbie In Ascension, kill a space monkey with a fire trap.

Undiscovered Truths Find all the intel hidden in Nightfall.

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

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

Burgertown Escort Service Rescue 1 survivor in Infection.

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

Untouchable Defeat any boss without taking damage (General)

Sacrifice Ensure your squad escapes safely from Cuba.

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

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

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

Bike Win 5 Festival races using a Bike

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

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

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

Signing Day Announce where your college ball will be played at.

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

A Bridge To Somewhere Extend the bridge in Awakening in Regular or Hardcore difficulty.