Here is the full list of all 70 Batman: Return to Arkham - there are Arkham City achievements worth 1,500 gamerscore.
Have 12 murderous dates with Calendar Man
Main Story, Side Missions, Upgrades, Collectables, New Game Plus and Riddler's Revenge (as Batman)
Complete New Game Plus
Jump off the tallest building in Arkham City and glide for 1 minute without touching the ground.
Use 5 different Quickfire gadgets in one fight as Robin in Harley Quinn's Revenge
Shield Bash 5 different thugs
Snap Flash an unarmed thug, an armed thug, an environmental object and a Titan
Destroy all Harley Balloons
Zip Kick 5 different thugs
Obtain all 108 medals on the original Arkham City campaigns (as Batman)
Obtain all 72 medals on the original Arkham City ranked maps (as Batman)
The joke's on who?
Defuse all bombs in 3 minutes or less
Clean up the Dry Docks
Find a way into the secret base
No crimefighter should be without this
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)
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 72 medals on the original Arkham City campaigns (as Batman)
Obtain 48 medals on the original Arkham City ranked maps (as Batman)
Stop all assaults in Arkham City
Reveal the mystery watcher
Retrieve your stolen goods
Complete all 40 of the Catwoman Riddler grid items
Track down the serial killer
Obtain 36 medals on the original Arkham City campaigns (as Batman)
Rescue all the hostages from Riddler
All the world is a stage
Don't look down
Rescue the fifth hostage from Riddler
Collect all of Batman's gadgets and upgrades
Steal the score of a lifetime
Fight for survival
Reunite the separated couple
Stop the phone booth killer
Find someone to play remote Batarang catch with
Time is running out
Stop the contract operative
Collect enough evidence to locate the gun for hire
Obtain 24 medals on the original Arkham City ranked maps (as Batman)
A deadly game of hide and seek
Destroy it all
We are legion
Uncover the secret of Arkham City
Use 5 different Quickfire gadgets in one fight (any play mode)
Rescue the fourth hostage from Riddler
Rescue the third hostage from Riddler
Stop the unstoppable
Perform a perfect combo including all of Batman's combat moves (any play mode)
Complete one combat challenge without taking damage (any character)
Last man standing
Clear the airwaves
Rescue the second hostage from Riddler
Rescue the first hostage from Riddler
Solve the first riddle
Drop in on an old friend
Hammer the point home
Complete a combo of 50 moves (any play mode, any character)
There is only one way in
Complete all augmented reality training exercises
Save the medical volunteers
Save the damsel, but is she in distress?
Answer a ringing phone
A moment of remembrance
Answer the call for help
Become the Bat