Flux-Entropy

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

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

Salute Me Achieve the rank of Lieutenant.

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

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

Taking Flight In Gorod Krovi, ride a Dragon.

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

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

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

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

You're On Fire! Get 5 Kill Streaks of 5 kills in Elimination or Skirmish in PvP.

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

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

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.

Burgertown Escort Service Rescue 1 survivor in Infection.

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

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

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

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

Legendary Hero Reach Reputation 5 with any Hero.

Like Killing Ants Kill 5000 soldiers.

ARCHIVIST Collect all documents

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

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

This Is How Hot Dogs Are Made 10 Walkers Killed with Saw Blades in the Logging Camp

Heads Up! Kill 25 Heroes by attacking them from above in PvP.

Alright, Alright Survive until round 10 in Infection.

Safety Warning Escape from a grinder hazard on the grind stage

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

Survivor Survive until Round 25 in Outbreak.

PC Load Letter Use the 3D printer 15 times in a single match in Outbreak.

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

Painting The Scenery Completed Mission 08 in campaign mode.

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

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

The Ultimate Sacrifice In Zetsubou No Shima, retrieve the Skull of Nan Sapwe.

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

Dark Offering Make an offering to The Bone Lord.

I've Got Your Back! Save an ally 50 times in 4v4 PvP matches.

Elimination Master Win 20 Elimination PvP matches.

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.

Escaped Awakening Escape Awakening for the first time in Regular or Hardcore difficulty.

Have a Nice Trip! Kill a Walker That Is Falling Due to Dismemberment

Faith in the Fallen Take a leap of faith

Egg-stra Awakening! Complete the Egg-Stra XP challenge and then scan an obelisk in the Invasion DLC package.

Going Up… In The Darkest Shore, unlock the Ubersprengen.

Nightfall Completionist Complete all challenges and kill the Breeder in Nightfall in Regular or Hardcore difficulty.

Turnabout is Fair Play Kill 50 Cryptids with the Venom-X weapon in Nightfall in Regular or Hardcore difficulty.