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

Gimme Five Attain Level 5 with all Murder Circus contestants.

Most Dangerous Game Complete a Murder Circus Finale with Artemis.

Viva La Reina Complete a Murder Circus Finale with Consuela.

Knowns and Unknowns Repay a favour.

Living the Dream Complete a Murder Circus Finale with Daniel Li.

Shadow Vigilante Master the Shadow Vigilante Dark Knight track

You Died Alot Get killed by Jason 100 times.

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

Target Score Sampler! Beat the target score in any Chapter (Points Count Mode).

Alliance Reborn Break and enter.

Duct Tape FTW Create all combo weapons

I've Got This Acquire all upgrades

Zombie Genocide Master Kill 72,000 zombies

Give Them Something to Believe Complete New Game Plus

Just Like Old Times Dispatch the professor with a shot to the groin.

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

The Spider's web Defeat 50 enemies using the Amazing Charge Attack

Grave and Growing Free a country.

Distinguished Service Collect 50 Team Boosts.

Extreme Manhunt Complete a Seasonal Manhunt mission on Challenge difficulty or above.

Hi Score Collect 1,000,000 points over all story levels you have played.

Mindful Vandalism Place a sticker or a decoration on another player's sackperson.

Head Trauma Use every type of melee weapon on a zombie

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

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

Hard pressed Complete all levels on Hard

Monkey Obsessed! Collect every Monkey Toy in the game.

Full-Auto Frenzy! Kill a total of 200 Enemies using Rubi's Sub-Machineguns during acrobatic slow-mo.

A More Perfect Union Finish what you started.

The Spider's shadow Complete a Noir level without triggering an alarm

Insert Coin Complete all achievements in one game from The Arcade.

Campaign Nightwing Obtain 114 medals on the original Arkham City and Nightwing Bundle Pack campaigns (as Nightwing)

Campaign Wonder Obtain 114 medals on the original Arkham City and Robin Bundle Pack campaigns (as Robin)

Let it Snow Receive the Extreme Environment Suit (XE Suit)

The circle is now complete Get to Rank 100

Balancing Act Balance another sackperson on an object while lifting it with touch.

Drilling for Justice Assemble the cryonucleation tunneller - the cryodrill

Iron and Blood Fight back an ambush.

Heroes Unite Perform 10 Fusions with another player-controlled hero in a Co-Op game.

Worst Nightmare Master the Worst Nightmare Dark Knight track

Hard Time Finish Story Mode on Fixer (Hard) difficulty.

Stalact-tactician Takedown 2 enemies with one stalactite

For Auld Lang Syne Stop Freeze and bring Boyle to justice

Smooth moves Unlock all Combat Upgrades

Snowjob Get 3 enemies frozen in one attack

Down with the Revolution Stop Anarky thug operations in South Gotham

Potential Evidence Collect 10 Concept Art Bundles in HQ maps.

Legend of the Dark Knight Complete all Dark Knight challenges

TBoGT: Past the Velvet Rope Score 80% or above in all missions. (The Ballad of Gay Tony)