Full list of all 70 Batman: Arkham City achievements worth 1,500 gamerscore. It takes around 40-50 hours to unlock all of the achievements in the base game.
The base game contains 50 achievements worth 1,000 Gamerscore, and there are 4 DLC packs containing 20 achievements worth 500 Gamerscore.
Have 12 murderous dates with Calendar Man
Complete every challenge in Arkham City
Obtain all 108 medals on the original Arkham City campaigns (as Batman)
Complete New Game Plus
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 ranked maps (as Batman)
Jump off the tallest building in Arkham City and glide for 1 minute without touching the ground.
Rescue all the hostages from Riddler
Stop all assaults in Arkham City
Rescue the fifth hostage from Riddler
Stop the contract operative
Collect all of Batman's gadgets and upgrades
Collect enough evidence to locate the gun for hire
Obtain 48 medals on the original Arkham City ranked maps (as Batman)
Rescue the fourth hostage from Riddler
Rescue the third hostage from Riddler
Track down the serial killer
Reunite the separated couple
Time is running out
Use 5 different Quickfire gadgets in one fight (any play mode)
Destroy it all
Rescue the second hostage from Riddler
Reveal the mystery watcher
Obtain 24 medals on the original Arkham City ranked maps (as Batman)
All the world is a stage
Don't look down
Fight for survival
Complete a combo of 50 moves (any play mode, any character)
A deadly game of hide and seek
Stop the phone booth killer
We are legion
Uncover the secret of Arkham City
Complete one combat challenge without taking damage (any character)
Stop the unstoppable
Last man standing
Find someone to play remote Batarang catch with
Rescue the first hostage from Riddler
Clear the airwaves
Solve the first riddle
Hammer the point home
There is only one way in
Complete all augmented reality training exercises
Answer the call for help
A moment of remembrance
Answer a ringing phone
Save the medical volunteers
Save the damsel, but is she in distress?
Become the Bat
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)
Complete all 40 of the Catwoman Riddler grid items
Retrieve your stolen goods
Steal the score of a lifetime
Drop in on an old friend
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)
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)
Clean up the Dry Docks
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
Destroy all Harley Balloons
Find a way into the secret base
No crimefighter should be without this
Shield Bash 5 different thugs
Zip Kick 5 different thugs
Use 5 different Quickfire gadgets in one fight as Robin in Harley Quinn's Revenge