Here is the full list of all 64 Batman: Arkham City - there are Game of the Year Edition achievements.
Complete New Game Plus
Complete every challenge in Arkham City - Main Story, Side Missions, Upgrades, Collectables, New Game Plus and Riddlers Revenge (as Batman)
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)
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)
Snap Flash an unarmed thug, an armed thug, an environmental object and a Titan
Obtain 48 medals on the original Arkham City maps (as Batman)
Obtain all 72 medals on the original Arkham City maps (as Batman)
Obtain all 108 medals on the original Arkham City campaigns (as Batman)
Complete one combat challenge without taking damage (any character)
Obtain 24 medals on the original Arkham City maps (as Batman)
Obtain 36 medals on the original Arkham City campaigns (as Batman)
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)
Complete all 40 of the Catwoman Riddler grid items
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
Have 12 murderous dates with Calendar Man
The joke's on who?
Clean up the Dry Docks
Zip Kick 5 different thugs
Shield Bash 5 different thugs
Find a way into the secret base
A moment of remembrance
Use 5 different Quickfire gadgets in one fight (any play mode)
Rescue all the hostages from Riddler
Stop all assaults in Arkham City
No crimefighter should be without this
Rescue the fifth hostage from Riddler
Complete all augmented reality training exercises
Retrieve your stolen goods
Collect all of Batman's gadgets and upgrades
Rescue the fourth hostage from Riddler
Stop the phone booth killer
Track down the serial killer
Destroy it all
Rescue the third hostage from Riddler
Rescue the second hostage from Riddler
Rescue the first hostage from Riddler
Reveal the mystery watcher
Stop the contract operative
Time is running out
Reunite the separated couple
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
Solve the first riddle
Stop the unstoppable
Last man standing
Clear the airwaves
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