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