SomeBoredHuman

Sphinx' Riddle Complete all 40 of the Catwoman Riddler grid items

Electronic Perspective Flew the drone in first person mode for 60 seconds.

The Savior's Descent Proof of one who has mastered the basics of this world and begun a great journey.

Liberty City (5) Your friends all like you above 90%.

Back to School Play any Popit Puzzle whilst wearing a Newton costume

Look, I made this! Create a ship and share it

Pretty Picture Collect 50 Diamonds to unlock your first Painting in the Castle

Kat versus World Defeated 1,000 enemies.

Battering Ram Shield Bash 5 different thugs

Lucky Me! Win a prize from the vending machine

Frequent Flyer Zip Kick 5 different thugs

Campaign Bronze Obtain 36 medals on the original Arkham City campaigns (as Batman)

Kat Working Overtime Completed 40 side missions.

High Wind Alert Defeated 10 enemies within 10 seconds using one Gravity Typhoon.

Complete The Progress Emporium Complete the main path of The Progress Emporium

KamuroGo Local Completed 30 KamuroGo City Missions.

Sewer Aficionado Discovered every mysterious warp manhole.

Event Horizon Defeated 10 enemies with one Micro Black Hole.

Lucky Star Get a top-grade item from a Dream Machine.

Pipe Coordinator Placed 9 types of furniture in Kat's Pipe House.

Hero of the Story Complete 40 substories.

Free Bird Destroy 25 or more of Newton's robots

Novice Stylist Proof of customizing your first schema. Continue on this path to find your own style.

Cave Cleaner Veteran Kill over 500 enemies

Goromi the Hostess Met the mysterious lady, Goromi.

Cryptographer Break the code.

Gold Revenge Obtain all 72 medals on the original Arkham City ranked maps (as Batman)

Perfect Freeflow 2.0 Perform a perfect combo including all of Batman's combat moves (any play mode)

Charted! - Brutal Finish the Game on Brutal Without Changing the Difficulty

Master of the locks Break all the locks on the worlds' and levels' paintings

Lifetime Service Award Completed all side missions.

Lunar Vortex Grabbed 5 enemies with one Lunar Style Vortex Field.

Big Hair in the Crosshairs Defeat the yakuza with an afro on the highway.

No More Lizard Soup Complete Shadowed Halls

Majima From Below Assaulted by Majima from a manhole.

Remember The Fallen Collect All Fallen Striders

KamuroGo Shopper Completed five stores in KamuroGo's Shop Missions.

Break it Down! Breaker Majima forced his way into a fight.

Old school Finish all the "Back to Origins" paintings

Master of Body and Soul Obtained all Soul, Technique, and Body abilities.

It's Working Today Buy an item from the Capsule Machine

Not even a dent Complete a level with a custom made ship, without dying

Worked Hard for the Money Throw away a total of five million yen.

Going Steady A girl revealed her true feelings.

Half the Battle Completed 50% of the Completion List.

Collector of Collecting Collect All Large Canisters

Complete Eve's Asylum Complete the main path of Eve's Asylum

Ice To See You Defeat 'Frost Grubber'

Perfect Timing Proof of successfully guarding against an enemy's attack with perfect timing.

TLAD: The Lost Boy Become leader of The Lost. (The Lost and Damned)