Cosmic-Maxis

Costume Coordinator Cleared a track with each character in changed costumes

...The Harder They Fall Destroy every Surveillance Airship

Gnomad Complete GnoMAD

Arkham City Lockdown Defeat every Villain With Batman

One Step Ahead Disarm ten trap mechanisms

The Useless Trinket Earn the first of Skelly's prizes

Boxing Champion Get 3 Stars in a level where each player is a Box Chef. Only available in Classic Mode.

Last Action Hero Help Garland King finally finish her picture

Campaign Silver Obtain 72 medals on the original Arkham City campaigns (as Batman)

Extra strong Upgrade the Health Potions

Fall of the Shinbakufu Complete Act 3 of the main story

Epilogue Complete the Epilogue

Among the Stars Completed "Among the Stars"

Think No Evil Defeat Shamura.

Location Scout Visit all Locations in Director Mode.

Beauty and the Beast Seen all Bond Fevers between Naoto and Kanji

Undertaker In The Final Reich, kill the Bomber with the shovel.

Mad Scientist Awarded for alchemizing 120 different items.

Against all odds Defeat any Boss without taking damage

Sentimental Value You kept Megan's bracelet for yourself. Apparently, letting go really is the hardest part.

Bronze Medalist Completed all challenge missions with bronze or better.

All the Gears Earn 5 Gears in every Challenge.

Parasite-Seeing In Shadows of Evil, kill 5 Parasites while riding on the train.

We Will Survive Win 15 matches in Team Survivors.

Speed Demon Complete the game in under 4 hours

Top Of The Food Chain You successfully killed 20 players with a pistol in a deathmatch.

Hang 'em High! Kill 30 enemies while they're suspended in the air with the grappling hook.

Marked for Greatness Seal 75 rifts in a single playthrough.

Well Versed Fully Unlock the Olympians' Codex entries

Gasoline Cowboy Rescue your allies with the Sherman while keeping your armor above 80% in Collateral Damage.

Business Etiquette 101 Impress Oda with your perfect manners.

Tidyman Spend 500 chemical resources on cleaning weapons.

Knowledge is Power Uncover the mysteries of the Lost Tomb of Otorongo

The Gift that Keeps on Giving Experienced all 9 Game Modes and all 9 Modifiers of the Mutator.

Lore Master Complete All Side Quests

Completionist Complete all Extinction challenges and escape in Regular or Hardcore difficulty.

Throttled Escape Escape using a relic in Regular or Hardcore difficulty.

Unseen Predator Remain in Zer0's Decepti0n mode for 10 seconds straight.

They Suspect Nothing... Play a level with 4 players, of which 3 are the same chef

Outsmarted In singleplayer, get a quadruple kill with a single Frag Grenade

Regular Customer Used a total of P$500,000 in Shopping

God of War Awarded for overcoming 50 skirmish challenges.

Sniper Kill 50 enemies at long distance.

Like lightning Use the Boost for a total of 30 minutes.

Silver Medalist Completed all challenge missions with silver or better.

Minced Meat Take out the Mall's biggest customer

Dream Big Awarded for surviving 10 Dreamer's Doors.

This Galaxy Ain't Big Enough… Completed "This Galaxy Ain't Big Enough…"

People Person Become friends with at least three of your inner circle in one playthrough.

Capped Out... For Now Reach level 35.