Head Games
Rescue Mad Hatter's second hostage.
The Scene of the Crime
Rescue Mad Hatter's first hostage.
Perfect Knight - Day 2
Complete every challenge in Arkham City - Main Story, Side Missions, Upgrades, Collectables, New Game Plus and Riddlers Revenge (as Batman)
A Few New Tricks
Use 5 different Quickfire gadgets in one fight as Robin in Harley Quinn's Revenge
Gadget Attack
Use 5 different Quickfire gadgets in one fight (any play mode)
Sphinx' Riddle
Complete all 40 of the Catwoman Riddler grid items
Pay Your Respects
A moment of remembrance
Genius
Rescue all the hostages from Riddler
Aggravated Assault
Stop all assaults in Arkham City
Frequent Flyer
Zip Kick 5 different thugs
Twice Nightly
Complete New Game Plus
Snap To It
Snap Flash an unarmed thug, an armed thug, an environmental object and a Titan
Bomb Squad
Defuse all bombs in 3 minutes or less
Party's Over
Destroy all Harley Balloons
The Last Laugh
The joke's on who?
Battering Ram
Shield Bash 5 different thugs
How's It Hanging?
Clean up the Dry Docks
Lost Property
No crimefighter should be without this
Breaking and Entering
Find a way into the secret base
Robin Revenge
Obtain 78 medals on the original Arkham City and Robin Bundle Pack maps (as Robin)