- Campaign Gold
Obtain all 108 medals on the original Arkham City campaigns (as Batman)
23 December 2011 - 9 guides
- Genius
Rescue all the hostages from Riddler
22 December 2011 - 2 guides
- Brainteaser
Rescue the fifth hostage from Riddler
Unlocked offline - 3 guides
- Aggravated Assault
Stop all assaults in Arkham City
21 December 2011 - 3 guides
- Intellectual
Rescue the fourth hostage from Riddler
21 December 2011 - 2 guides
- Twice Nightly
Complete New Game Plus
21 December 2011 - 5 guides
- Campaign Silver
Obtain 72 medals on the original Arkham City campaigns (as Batman)
19 December 2011 - 1 guide
- Campaign Bronze
Obtain 36 medals on the original Arkham City campaigns (as Batman)
18 December 2011 - 1 guide
- Fully Loaded
Collect all of Batman's gadgets and upgrades
18 December 2011 - 4 guides
- Perfect Freeflow 2.0
Perform a perfect combo including all of Batman's combat moves (any play mode)
18 December 2011 - 10 guides
- Gold Revenge
Obtain all 72 medals on the original Arkham City ranked maps (as Batman)
17 December 2011 - 11 guides
- Silver Revenge
Obtain 48 medals on the original Arkham City ranked maps (as Batman)
17 December 2011 - 2 guides
- Puzzler
Rescue the third hostage from Riddler
15 December 2011 - 1 guide
- Bronze Revenge
Obtain 24 medals on the original Arkham City ranked maps (as Batman)
15 December 2011 - 2 guides
- Serial Killer
Track down the serial killer
15 December 2011 - 1 guide
- Mystery Stalker
Reveal the mystery watcher
15 December 2011 - 2 guides
- Catch
Find someone to play remote Batarang catch with
14 December 2011 - 5 guides
- AR Knight
Complete all augmented reality training exercises
13 December 2011 - 3 guides
- Contract Terminated
Stop the contract operative
13 December 2011 - 2 guides
- Forensic Expert
Collect enough evidence to locate the gun for hire
13 December 2011 - 2 guides
- Bargaining Chip
Reunite the separated couple
13 December 2011 - 1 guide
- Broken Toys
Destroy it all
12 December 2011 - 2 guides
- Dial Z For Murder
Stop the phone booth killer
12 December 2011 - 3 guides
- Distress Flare
Answer the call for help
12 December 2011 - 1 guide
- Mastermind
Rescue the second hostage from Riddler
12 December 2011 - 1 guide
- Conundrum
Rescue the first hostage from Riddler
12 December 2011 - 3 guides
- Stop the Clock
Time is running out
12 December 2011 - 1 guide
- Pay Your Respects
A moment of remembrance
12 December 2011 - 3 guides
- Gotham Base Jumper
Jump off the tallest building in Arkham City and glide for 1 minute without touching the ground.
12 December 2011 - 5 guides
- Gadget Attack
Use 5 different Quickfire gadgets in one fight (any play mode)
12 December 2011 - 2 guides
- IQ Test
Solve the first riddle
12 December 2011 - 1 guide
- Flawless Freeflow Fighter 2.0
Complete one combat challenge without taking damage (any character)
11 December 2011 - 2 guides
- Exit Stage Right
All the world is a stage
11 December 2011 - 2 guides
- Freefall
Don't look down
11 December 2011 - 1 guide
- Ghost Train
Fight for survival
09 December 2011 - 1 guide
- Hide And Seek
A deadly game of hide and seek
07 December 2011 - 3 guides
- 50x Combo
Complete a combo of 50 moves (any play mode, any character)
07 December 2011 - 10 guides
- Sandstorm
We are legion
06 December 2011 - 2 guides
- Lost And Found
Uncover the secret of Arkham City
06 December 2011 - 2 guides
- Wrecking Ball
Stop the unstoppable
06 December 2011 - 2 guides
- Gladiator
Last man standing
06 December 2011 - 1 guide
- Communication Breakdown
Clear the airwaves
06 December 2011 - 1 guide
- Ring Ring
Answer a ringing phone
04 December 2011 - 2 guides
- One-Armed Bandit
Hammer the point home
04 December 2011 - 1 guide
- Chimney Sweep
There is only one way in
04 December 2011 - 1 guide
- Savior
Save the medical volunteers
04 December 2011 - 1 guide
- Acid Bath
Save the damsel, but is she in distress?
03 December 2011 - 1 guide
- I'm Batman
Become the Bat
03 December 2011 - 2 guides