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 36 medals on the original Arkham City campaigns (as Batman)
Have 12 murderous dates with Calendar Man
Complete one combat challenge without taking damage (any character)
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)
Use 5 different Quickfire gadgets in one fight (any play mode)
A moment of remembrance
Complete New Game Plus
Track down the serial killer
Complete all 40 of the Catwoman Riddler grid items
Rescue all the hostages from Riddler
Stop all assaults in Arkham City
Collect all of Batman's gadgets and upgrades
Reveal the mystery watcher
Rescue the fifth hostage from Riddler
Retrieve your stolen goods
All the world is a stage
Don't look down
Steal the score of a lifetime
Fight for survival
Stop the contract operative
Time is running out
Rescue the fourth hostage from Riddler
Reunite the separated couple
A deadly game of hide and seek
Stop the phone booth killer
Rescue the third hostage from Riddler
Destroy it all
We are legion
Uncover the secret of Arkham City
Stop the unstoppable
Last man standing
Rescue the second hostage from Riddler
Rescue the first hostage from Riddler
Clear the airwaves
Solve the first riddle
Drop in on an old friend
Hammer the point home
There is only one way in
Complete all augmented reality training exercises
Save the medical volunteers
Save the damsel, but is she in distress?
Become the Bat
Perform a perfect combo including all of Batman's combat moves (any play mode)
Obtain all 72 medals on the original Arkham City ranked 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 ranked 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 ranked maps (as Nightwing)
Obtain 114 medals on the original Arkham City and Nightwing Bundle Pack campaigns (as Nightwing)
Destroy all Harley Balloons
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
Use 5 different Quickfire gadgets in one fight as Robin in Harley Quinn's Revenge
Find a way into the secret base
No crimefighter should be without this
Zip Kick 5 different thugs
Shield Bash 5 different thugs