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Swimming with the Fishes In Voyage of Despair, kill 50 zombies that are underwater in a single game

Skilled Adversary In IX have a Challenge banner with all 9 medallions

Working Vice Shoot 10 stacks of cocaine in ‘Hostile Takeover’ Operation.

Elements Completionist Gain all stars in 'Elements'.

A for effort Attain a Time Trial star rating of 35

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

Go for Gold! In Onslaught, acquire seven gold chalices

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)

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

Turbocharged Completionist Gain all the stars in 'Turbocharged'.

Moneybags Have 15000 credits in the bank in Outbreak.

Around and Around We Go Perform every level interaction once

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

Lamborghini Icons Completionist Gain all the stars in 'Lamborghini Icons'.

Backwards & Forwards Complete ALL levels in N. Verted mode

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

Unite In Speed Completionist Gain all stars in 'Unite In Speed'.

Doctorate in Thermodynamics Kill 2 scientists with a single grenade in ‘Self Destructive’ Operation.

Test the Product Knife 10 stacks of cocaine in ‘Hostile Takeover’ Operation.

All Star Get 100 Stars in S.T.A.R. Lab Mode

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

Pacesetter Completionist Gain all stars in 'Pacesetter'.

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.

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

Sleuth Unlock all intel (videos and audio files)

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

Velocity Completionist Gain all stars in 'Velocity'.

Evolution Completionist Gain all stars in 'Evolution'.

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)

Still counting Attain a Time Trial star rating of 50

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

Gong like the Wind In IX, defeat all 8 challengers summoned by a gong within 5 minutes

The Sky Is Mauling! Kill 3 enemies with Mortar Strike in ‘Air Traffic Control’ Operation.

Making a Point Kill both bosses with head shots in ‘Hostile Takeover’ Operation.

Enthusiasms Kill Torres with a melee attack in ‘Hostile Takeover’ Operation.

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.

Stowaway In Voyage of Despair, spend 5 consecutive rounds in the Cargo Hold

Torque Completionist Gain all stars in 'Torque'.

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

Chapter 2 Speedrun Complete a Speedrun of Chapter 2 below the target time.

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

West Side for Life In Blood of the Dead, reach Round 20 without leaving the West Side of the island

Justice Is Blind Kill 4 enemies who are stunned by a Flashbang Grenade in any Operation.

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

Chapter 4 Speedrun Complete a Speedrun of Chapter 4 below the target time.

Professional Reach Driver Level 15