Secret Achievements Cheat for Batman: Arkham Asylum on the Xbox 360

Baneful Payback - 25 points - Defeat Bane.
Born Free - 10 points - Escape from Intensive Treatment to the island surface.
Breaking And Entering - 10 points - Gain access to Arkham Mansion after it is locked down by the Joker.
Crocodile Tears - 50 points - Venture into Killer Croc's lair and come out alive.
Daydreamer - 10 points - Survive the nightmare of the Scarecrow's fear gas.
Double Trouble - 25 points - Defeat two Titan Henchmen at once.
Just What The Doctors Ordered - 10 points - Save all the doctors in Medical.
Leave No Man Behind - 10 points - Rescue the guards and henchman from the Joker toxin in Decontamination.
Malpractice Needs More Practice - 10 points - Survive the onslaught from the deformed Joker henchman.
Poisoned Ivy - 50 points - Defeat the giant Titan Ivy plant.
Recurring Nightmare - 10 points - Face your biggest fears and keep your sanity.
Resist The Fear - 50 points - Conquer the effects of the Scarecrow's fear gas.
Shocking Rescue - 10 points - Take down Zsasz in the Patient Pacification Chamber.
Solitary Confinement - 25 points - Capture and lock up Harley Quinn.
Zsasz Cut Down To Size - 10 points - Save Dr. Young from being killed by Victor Zsasz.