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