At the main menu, press Up, Up, Down, Down, Y, Down, Up, Y to unlock the Cheat option at the title screen. Select the Cheat option, then enter one of the following case-sensitive codes to activate the corresponding cheat function, which can be toggled on or off (except for All levels and emergencies):
All levels and emergencies
Enter KEYTOTHECITY as a code to unlock all levels and emergencies.
Long range stungun
Enter FRYINGTIME as a code.
Minigun instead of pistol
Enter MINIFUN as a code.
Mk. 3 assault rifle with unlimited grenades
Enter ULTIMATEPOWER as a code.
Mk. 4 pistol
Enter ZEROTOLERANCE as a code.
Bullets set fire to enemies
Enter BURNINGBULLET as a code.
Thermal breather Mk. 2 has better smoke visibility
Enter ISEEYOU as a code.
Disco mode
Enter DANCINGFEET as a code.
Terror mode
Enter BURNERSREVENGE as a code.
Squeaky voices
Enter WHATWASTHAT as a code.
No heads
Enter KEEPYOURHEAD as a code.
Completion bonuses
Complete the game to unlock the Terror difficulty setting and another level of medals.
Emergency missions
Capture the indicated number of gang leaders alive to unlock the corresponding Emergency mission:
Emergency Downtown: Capture 1 gang leader alive.
Emergency South Side Lot: Capture 2 gang leaders alive.
Emergency Dockyard: Capture 4 gang leaders alive.
Emergency Sewers: Capture 6 gang leader alive.
Emergency Thompson St.: Capture 8 gang leader alive.
Emergency Angel Heights: Capture 10 gang leader alive.
Let Nick Spin his gun
Rotate the Right Analog-stick clockwise to make Nick spin the gun he is holding. Note: This only works with the pistol.
Medal bonuses
Get the indicated number of medals to unlock the corresponding bonus: