During any mission pause and press: UP, RIGHT, LEFT, DOWN, CIRCLE, L1, R1, R1, L1, CIRCLE, DOWN, LEFT, RIGHT, UP. If entered correctly you should have access to the debug menu. You then can have all weapons, and a handfull of other options.

While playing, pause the game, then press Up, Down, Left, Right, Down, Right, L1, R1, R1 to access the Cheat Menu. From here you can enable several codes:

Blood Mode: Press L1, Down, R1, Left, L1, Right, R1 to activate Blood Mode. Whenever you run over a person, a puddle of blood will be left on the ground.

Angel Mode: Enable Blood Mode, then press Up, R1, Down, L1, Up, Left, R1, Right, L1. Whenever you run over a person, an Angel flies up into the sky representing the dead person's soul.

Extra Tune: Press DOWN, L1, L1, O, O, R1, UP, SQUARE, L1

More Nitros: Press L1, O, DOWN, L1, UP, SQUARE, O, R1

Invulnerability: Press L1, L1, L1, L1, LEFT, O, O, SQUARE, L1

Next Mission: Press L1, RIGHT, DOWN, LEFT, UP, R1

Car Select (from Tune Up menu): Press LEFT, R1, RIGHT, R1, LEFT, R1, RIGHT, R1

All Time Trials: Press R1, L1, O, LEFT, O, O, RIGHT, L1, O

Mission Select: Press UP, DOWN, O, L1, R1, L1, O, UP, DOWN

Tune Up Menu: Press L1, R1, L1, UP, DOWN, O, DOWN, RIGHT, LEFT, SQUARE, R1

Level  Password
1 sSFTgfCnZ
2 rnLVbbJnY
3 frJKZYCPf
4 rmKKFFfnk
5 gvLKCgkmp
6 gvLKBgkmb
7 gvJVCskmp
8 gvBVYshNv
9 kRfXrWYPs
10 gFFVkrFVY
11 sSSPhtZNb
12 gSTBXrfmq
13 gXTCTTZmY
14 gXWBXWfrz
15 sSSFJWLNZ
16 gSTRghCfm
17 gSFXTMBKH
18 sVHtsMMKC
19 gSFXTMBKH
20 gSBMVMFKS
21 sPCgfghggr
22 gSFMgkHZP
23 sPHgfgfgS
24 gXBTgshCM
25 gSJVfVYZN