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