- Biggest Bang
Complete story mode on Hard difficulty
03 November 2009 - 4 guides
- Party Pooper
KO all the henchmen celebrating your arrival at the party
03 November 2009 - 8 guides
- Perfect Knight
100% Complete
02 November 2009 - 2 guides
- Predator Gold
Achieve 24 medals on predator challenges
- Predator Silver
Achieve 16 medals on predator challenges
- Freeflow Perfection
Perform a perfect combo including all of Batman's combat moves (any play mode)
01 November 2009 - 8 guides
- Invisible Predator
Complete one predator challenge by using only Silent Takedowns and without being detected
01 November 2009 - 5 guides
- Predator Bronze
Achieve 8 medals on predator challenges
01 November 2009 - 2 guides
- Freeflow Gold
Achieve 24 medals on combat challenges
01 November 2009 - 8 guides
- Freeflow Silver
Achieve 16 medals on combat challenges
01 November 2009 - 3 guides
- Mano-A-Mano
Defeat Titan henchman without using Batarangs (any play mode)
01 November 2009 - 7 guides
- Night Glider
Glide continuously for over 100m
01 November 2009 - 3 guides
- World's Greatest Detective
Spirit of Amadeus Arkham revealed
01 November 2009 - 5 guides
- Crack The E Nigma
Solve every riddle on the island
01 November 2009 - 3 guides
- Bigger Bang
Complete story mode on Normal difficulty
- Big Bang
Complete story mode on Easy difficulty
- Riddle Resolver
Solve 85% of Riddler challenges
31 October 2009 - 2 guides
- Poisoned Ivy
Defeat the giant Titan Ivy plant
31 October 2009 - 5 guides
- Freakshow Rodeo
Ride Titan henchman and knock down 10 thugs (any play mode)
31 October 2009 - 2 guides
- Crocodile Tears
Venture into Killer Croc's lair and come out alive
30 October 2009 - 2 guides
- Resist The Fear
Conquer the effects of the Scarecrow's fear gas
- Mental Athlete
Solve 70% of Riddler challenges
29 October 2009 - 2 guides
- Double Trouble
Defeat two Titan Henchmen at once
- Freeflow Bronze
Achieve 8 medals on combat challenges
29 October 2009 - 2 guides
- Conundrum Cracker
Solve 55% of Riddler challenges
29 October 2009 - 2 guides
- Solitary Confinement
Capture and lock up Harley Quinn
29 October 2009 - 2 guides
- Mystery Solver
Solve 40% of Riddler challenges
29 October 2009 - 2 guides
- Zsasz Cut Down To Size
Save Dr. Young from being killed by Victor Zsasz
22 October 2009 - 3 guides
- Recurring Nightmare
Face your biggest fears and keep your sanity
- Breaking And Entering
Gain access to Arkham Mansion after it is locked down by the Joker
- Lateral Thinker
Solve 25% of Riddler challenges
18 October 2009 - 2 guides
- Flawless Freeflow Fighter
Complete one combat challenge without taking damage
16 October 2009 - 2 guides
- Baneful Payback
Defeat Bane
15 October 2009 - 6 guides
- Daydreamer
Survive the nightmare of the Scarecrow's fear gas
15 October 2009 - 2 guides
- Just What The Doctors Ordered
Save all the doctors in Medical
- Cryptic Investigator
Solve 10% of Riddler challenges
14 October 2009 - 2 guides
- Freeflow Combo 40
Complete a combo of 40 moves (any play mode)
14 October 2009 - 10 guides
- Catch!
Catch a Batarang (any play mode)
14 October 2009 - 4 guides
- Born Free
Escape from Intensive Treatment to the island surface
14 October 2009 - 2 guides
- Arkham Analyst
Solve 5% of Riddler challenges
14 October 2009 - 3 guides
- Rope-A-Dope-A-Dope
String up one henchman and drop him to surprise a second (any play mode)
14 October 2009 - 5 guides
- Malpractice Needs More Practice
Survive the onslaught from the deformed Joker henchman
14 October 2009 - 2 guides
- Freeflow Combo 20
Complete a combo of 20 moves (any play mode)
- Leave No Man Behind
Rescue the guards and henchman from the Joker toxin in Decontamination
14 October 2009 - 2 guides
- Shocking Rescue
Take down Zsasz in the Patient Pacification Chamber
14 October 2009 - 2 guides
- Freeflow Combo 10
Complete a combo of 10 moves (any play mode)
14 October 2009 - 2 guides
- Freeflow Combo 5
Complete a combo of 5 moves (any play mode)
14 October 2009 - 2 guides