Batman: Arkham Asylum Cheats

Freeflow Bronze (Bronze): Achieve 8 medals on combat challenges
Freeflow Combo 10 (Bronze): Complete a combo of 10 moves (any play mode)
Freeflow Combo 20 (Silver): Complete a combo of 20 moves (any play mode)
Freeflow Combo 40 (Silver): Complete a combo of 40 moves (any play mode)
Freeflow Combo 5 (Bronze): Complete a combo of 5 moves (any play mode)
Freeflow Gold (Silver): Achieve 24 medals on combat challenges
Freeflow Perfection (Silver): Perform a perfect combo including all of Batman’s combat moves (any play mode)
Freeflow Silver (Bronze): Achieve 16 medals on combat challenges
Invisible Predator (Bronze): Complete one predator challenge by using only Silent Takedowns
Just What The Doctors Ordered (Bronze): Save all the doctors in Medical
Lateral Thinker (Bronze): Solve 25% of riddler challenges
Leave No Man Behind (Bronze): Rescue the guards and henchman from the Joker toxin in Decontamination
Malpractice Needs More Practice (Bronze): Survive the onslaught from the deformed Joker henchman
Mano-A-Mano (Silver): Defeat Titan henchman without using Batarangs (any play mode)
Mental Athlete (Bronze): Solve 70% of riddler challenges
Mystery Solver (Bronze): Solve 40% of riddler challenges
Night Glider (Bronze): Glide continuously for over 100m
Party Pooper (Bronze): KO all the henchmen celebrating your arrival at the party
Perfect Knight (Gold): 100% Complete
Platinum: Collect All Other Trophies
Poisoned Ivy (Silver): Defeat the giant Titan Ivy plant
Predator Bronze (Bronze): Achieve 8 medals on predator challenges
Predator Gold (Bronze): Achieve 24 medals on predator challenges
Predator Silver (Bronze): Achieve 16 medals on predator challenges
Recurring Nightmare (Bronze): Face your biggest fears and keep your sanity
Resist The Fear (Silver): Conquer the effects of the Scarecrow's fear gas
Riddle Resolver (Silver): Solve 85% of Riddler challenges
Rope-a-dope-a-dope (Bronze): String up one henchman and drop him to surprise a second (any play mode)
Shocking Rescue (Bronze): Take down Zsasz in the Patient Pacification Chamber
Solitary Confinement (Silver): Capture and lock up Harley Quinn
World’s Greatest Detective (Silver): Spirit of Amadeus Arkham revealed
Zsasz Cut Down To Size (Bronze): Save Dr. Young from being killed by Victor Zsasz

The Final Chronicle of Arkham Riddle
After you've snapped a shot of 23 of the 24 of the Chronicle of Arkham markers, you'll need to track down the final marker. The key to solving the mystery of Arkham is the Warden, whom you last saw in the Security Control Room. Head to this room in the Penitentiary and enter the small central office area. Look on the floor for a circle of scribbles and etchings that say "BATMAN." Enter Detective Mode and take an Environmental scan of this to complete the final Chronicle of Arkham Riddle.