Level passwords
Level - Name - Password
2 - Bridge - FLLNGDWN
3 - Fridge - GTMLK
4 - Freezer - CHLLBB
5 - Inside Wall - CLSNGN
6 - Graveyard - DGTHS
7 - Castle - FRNKNSTN
8 - Tan Base - BDBZ
9 - Revenge - LBBCK
10 - Desk - DSKJB
11 - Bed - GTSLP
12 - Blue Town - SMLLVLL
13 - Cashier - CHRGT
14 - Train - NTBRT
15 - Rockets - RDGLR
16 - Pool Table - FSTNLS
17 - Pinball Table - WHSWZRD
Invincibility
Pause the game and press Square, Circle, L1, R1.
All weapons with full ammunition
Pause the game and press Square, Circle, R1, L1. Enter the code again to refill ammunition.
Tin foil uniform
Enter "TNMN" as a password.