- Perfect Knight - Day 2
Complete every challenge in Arkham City
- Campaign Gold
Obtain all 108 medals on the original Arkham City campaigns (as Batman)
12 July 2012 - 9 guides
- Campaign Silver
Obtain 72 medals on the original Arkham City campaigns (as Batman)
- Campaign Bronze
Obtain 36 medals on the original Arkham City campaigns (as Batman)
- Gold Revenge
Obtain all 72 medals on the original Arkham City ranked maps (as Batman)
24 April 2012 - 10 guides
- Silver Revenge
Obtain 48 medals on the original Arkham City ranked maps (as Batman)
19 April 2012 - 2 guides
- Bronze Revenge
Obtain 24 medals on the original Arkham City ranked maps (as Batman)
19 April 2012 - 2 guides
- Perfect Freeflow 2.0
Perform a perfect combo including all of Batman's combat moves (any play mode)
19 April 2012 - 10 guides
- Mystery Stalker
Reveal the mystery watcher
12 April 2012 - 2 guides
- Serial Killer
Track down the serial killer
- Genius
Rescue all the hostages from Riddler
12 April 2012 - 2 guides
- Twice Nightly
Complete New Game Plus
12 April 2012 - 5 guides
- Gotham Base Jumper
Jump off the tallest building in Arkham City and glide for 1 minute without touching the ground.
12 April 2012 - 5 guides
- Brainteaser
Rescue the fifth hostage from Riddler
10 April 2012 - 3 guides
- Aggravated Assault
Stop all assaults in Arkham City
10 April 2012 - 3 guides
- Fully Loaded
Collect all of Batman's gadgets and upgrades
10 April 2012 - 4 guides
- Broken Toys
Destroy it all
09 April 2012 - 2 guides
- Intellectual
Rescue the fourth hostage from Riddler
09 April 2012 - 2 guides
- Contract Terminated
Stop the contract operative
09 April 2012 - 2 guides
- Forensic Expert
Collect enough evidence to locate the gun for hire
09 April 2012 - 2 guides
- Bargaining Chip
Reunite the separated couple
- Puzzler
Rescue the third hostage from Riddler
- Dial Z For Murder
Stop the phone booth killer
03 April 2012 - 3 guides
- Mastermind
Rescue the second hostage from Riddler
- Gadget Attack
Use 5 different Quickfire gadgets in one fight (any play mode)
02 April 2012 - 2 guides
- Pay Your Respects
A moment of remembrance
02 April 2012 - 3 guides
- Exit Stage Right
All the world is a stage
02 April 2012 - 2 guides
- Freefall
Don't look down
- Ghost Train
Fight for survival
- Flawless Freeflow Fighter 2.0
Complete one combat challenge without taking damage (any character)
01 April 2012 - 2 guides
- Stop the Clock
Time is running out
- 50x Combo
Complete a combo of 50 moves (any play mode, any character)
01 April 2012 - 10 guides
- Hide And Seek
A deadly game of hide and seek
01 April 2012 - 3 guides
- Sandstorm
We are legion
31 March 2012 - 2 guides
- Lost And Found
Uncover the secret of Arkham City
31 March 2012 - 2 guides
- Conundrum
Rescue the first hostage from Riddler
26 March 2012 - 3 guides
- IQ Test
Solve the first riddle
- Wrecking Ball
Stop the unstoppable
26 March 2012 - 2 guides
- Gladiator
Last man standing
- Communication Breakdown
Clear the airwaves
- AR Knight
Complete all augmented reality training exercises
23 March 2012 - 3 guides
- One-Armed Bandit
Hammer the point home
- Catch
Find someone to play remote Batarang catch with
18 March 2012 - 5 guides
- Acid Bath
Save the damsel, but is she in distress?
- I'm Batman
Become the Bat
17 March 2012 - 2 guides
- Savior
Save the medical volunteers
- Chimney Sweep
There is only one way in
- Distress Flare
Answer the call for help
- Ring Ring
Answer a ringing phone
Unlocked offline - 2 guides
- Storyteller
Have 12 murderous dates with Calendar Man
Unlocked offline - 10 guides