Full list of all 64 Batman: Arkham City achievements. It takes around 80-100 hours to unlock all of the achievements in the base game on Windows.
The base game contains 50 achievements, and there are 3 DLC packs containing 14 achievements.
Complete every challenge in Arkham City - Main Story, Side Missions, Upgrades, Collectables, New Game Plus and Riddlers Revenge (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 all 108 medals on the original Arkham City campaigns (as Catwoman)
Obtain all 72 medals on the original Arkham City ranked maps (as Catwoman)
Obtain 36 medals on the original Arkham City campaigns (as Batman)
Obtain all 72 medals on the original Arkham City ranked maps (as Batman)
Obtain 48 medals on the original Arkham City ranked maps (as Batman)
Obtain 24 medals on the original Arkham City ranked maps (as Batman)
Perform a perfect combo including all of Batman's combat moves (any play mode)
Complete New Game Plus
Complete one combat challenge without taking damage (any character)
Rescue all the hostages from Riddler
Stop all assaults in Arkham City
Reveal the mystery watcher
Retrieve your stolen goods
Complete all 40 of the Catwoman Riddler grid items
All the world is a stage
Don't look down
Rescue the fifth hostage from Riddler
Collect all of Batman's gadgets and upgrades
Destroy it all
Steal the score of a lifetime
Fight for survival
Have 12 murderous dates with Calendar Man
Rescue the fourth hostage from Riddler
Reunite the separated couple
Track down the serial killer
Time is running out
Use 5 different Quickfire gadgets in one fight (any play mode)
A deadly game of hide and seek
Stop the phone booth killer
Stop the contract operative
Rescue the third hostage from Riddler
We are legion
Uncover the secret of Arkham City
Complete all augmented reality training exercises
Rescue the second hostage from Riddler
Stop the unstoppable
Last man standing
Clear the airwaves
A moment of remembrance
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
Save the damsel, but is she in distress?
Become the Bat
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 ranked maps (as Robin)
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 ranked maps (as Nightwing)
Destroy all Harley Balloons
Use 5 different Quickfire gadgets in one fight as Robin in Harley Quinn's Revenge
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
Zip Kick 5 different thugs
Shield Bash 5 different thugs
Find a way into the secret base
No crimefighter should be without this