Block War arcade level:
Successfully complete Chapter 1: The Halls of Justice in story mode.
Breakout arcade level:
Successfully complete Chapter 8: Smokatorium in story mode.
Defeating vampires:
Save your ammunition by shooting them once with an incendiary round. They will run away instead of chasing you. Keep moving until they fall to the ground and burn into a pile of bones. This is useful in the Prison and Undercity levels.
Deformed Mode cheat:
Successfully complete the DeMarco PI level in arcade mode.
DeMarco PI arcade level:
Successfully complete Chapter 2: Nixon Penitentiary in story mode.
Escort Duty arcade level:
Successfully complete Chapter 10: Undercity in story mode.
Fugitive arcade level:
Successfully complete Chapter 3: The Docks in story mode.
Ghost cheat:
Successfully complete the Night Shift level in arcade mode.
Headless cheat:
Successfully complete the Riot level in arcade mode.
Infinite Ammo cheat:
Successfully complete the Escort Duty level in arcade mode.
Infinite Lawmeter cheat:
Successfully complete the Visiting Hours level in arcade mode.
Infinite Medi-paks cheat:
Successfully complete the Training Day level in arcade mode.
Low Gravity Ragdoll cheat:
Successfully complete the Block War level in arcade mode.
Mirror World cheat:
Successfully complete the Walter