At the character select screen enter these codes as your name.
Code
Effect
itstantrum
Unlimited lives
6031769
suckmyrocket
All weapons, all armor and a Get Out Of Jail Free card
buckfast
All weapons (press the * on the NUMPAD)
itsgallus
All levels and cities
nineinarow
super well
iamthelaw
No police
stevesmates
itcouldbeyou
999999999 Points
hate machine
Point values raised
porkcharsui
Diagnostic Mode
heart of Gold
Shows you the cut scenes with more violence
callmenlgel and symbol click on [*]
All weapons