AgentOmegaX

Icebreaker Equip the Icebreaker.

Fallen Son Analyze all four pieces of evidence from Batman's past failures

Tearing Away the Disguise Destroy all of the humanoid Dwarf Gekkos during story mode.

Zombie Genocide Master Kill 72,000 zombies

Dark Side Complete zone 21 without rescuing any survivors.

A Lover, Not a Fighter Successfully complete 10 No Kill battles during story mode.

Super Collision Course Either on (at least) your 2nd playthrough or in Hard (or greater) difficulty, conquer the fierce battle at Glaivend Basin without using any items!

Game Clear: Evil Completed the game on the Evil difficulty setting.

Under The Ice Finish the main quest in The Pale Reach.

Surprise Attack! Arrive at the objective in File R-07 without being spotted.

Give Them Something to Believe Complete New Game Plus

Barrel of laughs Kill 20 enemies with barrels

Captain Ephinea (100 titles) Acquired 100 different titles for Malik.
Just a little more! Note: Excludes bonus costume titles.

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

FINE PLAY! (Opening Boss) Achieve all FINE PLAY! technical bonuses in the Opening Stage boss battle.

The Force Complete Zone 18 without upgrading weapons.

Kindred Spirits Max out a Spirit's Affinity Level.

Fresh Fish Have 5 ice blocks in your cargo.

Medal Master Obtain 3,000 or more medals in Flick Rush.

Apprentice Complete stages 1 to 4

Fodra Queen in 60 Seconds Defeated the Fodra Queen in a minute or less.

Dream Piece Collector Obtain all Dream Pieces.

Guac is Extra Find Dave the Burrito.

The Most Famous Hedgehog in the World Have your photos taken in Studiopolis Zone

Game Clear: Chaos Completed the game on the Chaos difficulty setting.

From The Black Depths Catch the Colossal Squid.

Bookwyrm This is proof that you've become quite familiar with the Library. How to obtain this is kind of a secret, but if you take the time to do a bit of reading now and then, you should be pleasantly surprised.

No Damage! Finish any Stage without taking damage.

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

Head Trauma Use every type of melee weapon on a zombie

Chatterbox Sometimes, after you've found a discovery point or when you're at a save point, you have the opportunity to press L3 to initiate a conversation between your companions. This is proof that you've experienced many Things and had a lot of Opinions about them.

Terma-nated Defeated Solomus and the Terma Ten.

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

One with Oblivion Defeated Lambda Theos. Impressive!

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

A Growing Darkness Reach maximum Dark Balance.

Seekers of Secrets Complete all Secret Portals as both Sora and Riku.

Polar Angler Catch all known species of fish in The Pale Reach.

Frozen Favors Finish all side quests in The Pale Reach.

So What's Wrong with Taking the Back Streets? Take an alternate route during the Nonstop Debate.

Master Silencer Shoot down over 500 white noise.

Who Were Those Guys, Again? Defeated Veigue, Reala, and Amber.

Champions of All Districts Complete all Special Portals in Traverse Town as both Sora and Riku.

Champions of the Cathedral Complete all Special Portals in La Cité des Cloches as both Sora and Riku.

Aw, Shucks Pick up the Princess 200 times

Champions of the Dark City Complete all Special Portals in The World That Never Was as both Sora and Riku.

Views From the Abyss STU: Complete "The Spider's Thread" mode.

Champions of the Endless Ocean Complete all Special Portals in Prankster's Paradise as both Sora and Riku.

Champions of the Digital World Complete all Special Portals in The Grid as both Sora and Riku.

Cold Corruptions Catch all aberrations in The Pale Reach.