Here is the full list of all 64 Batman: Arkham City - there are Game of the Year Edition achievements.
Snap Flash an unarmed thug, an armed thug, an environmental object and a Titan
Obtain all 72 medals on the original Arkham City maps (as Catwoman)
Complete every challenge in Arkham City - Main Story, Side Missions, Upgrades, Collectables, New Game Plus and Riddlers Revenge (as Batman)
Complete New Game Plus
Complete all 40 of the Catwoman Riddler grid items
Rescue all the hostages from Riddler
Track down the serial killer
Rescue the fifth hostage from Riddler
Obtain all 72 medals on the original Arkham City maps (as Batman)
Obtain 48 medals on the original Arkham City maps (as Batman)
Obtain all 108 medals on the original Arkham City campaigns (as Batman)
Obtain 72 medals on the original Arkham City campaigns (as Batman)
Obtain 36 medals on the original Arkham City campaigns (as Batman)
Obtain 24 medals on the original Arkham City maps (as Batman)
Complete one combat challenge without taking damage (any character)
Zip Kick 5 different thugs
Defuse all bombs in 3 minutes or less
Use 5 different Quickfire gadgets in one fight as Robin in Harley Quinn's Revenge
Destroy all Harley Balloons
Shield Bash 5 different thugs
Rescue the fourth hostage from Riddler
Reveal the mystery watcher
Collect all of Batman's gadgets and upgrades
Rescue the third hostage from Riddler
Rescue the second hostage from Riddler
Rescue the first hostage from Riddler
Stop all assaults in Arkham City
Stop the contract operative
Complete all augmented reality training exercises
Use 5 different Quickfire gadgets in one fight (any play mode)
Reunite the separated couple
Stop the phone booth killer
Time is running out
Destroy it all
The joke's on who?
Clean up the Dry Docks
Find a way into the secret base
No crimefighter should be without this
Solve the first riddle
Retrieve your stolen goods
All the world is a stage
Don't look down
Steal the score of a lifetime
Fight for survival
A deadly game of hide and seek
We are legion
Uncover the secret of Arkham City
Stop the unstoppable
Become the Bat
Save the damsel, but is she in distress?
Save the medical volunteers
There is only one way in
Hammer the point home
Clear the airwaves
Last man standing
Drop in on an old friend
A moment of remembrance
Have 12 murderous dates with Calendar Man
Perform a perfect combo including all of Batman's combat moves (any play mode)
Obtain all 108 medals on the original Arkham City campaigns (as Catwoman)
Obtain 78 medals on the original Arkham City and Robin Bundle Pack maps (as Robin)
Obtain 114 medals on the original Arkham City and Robin Bundle Pack campaigns (as Robin)
Obtain 78 medals on the original Arkham City and Nightwing Bundle Pack maps (as Nightwing)
Obtain 114 medals on the original Arkham City and Nightwing Bundle Pack campaigns (as Nightwing)