Cheat Menu:
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:

Swarmers x5:
Press Up, Down, Up, Left, Right, R1, L1, R1, L1.

Double laser:
Press R1, L1, R1, L1, Up, Down, Up, Left, Right.

Unlock New York time trial:
Press L1, Right, Down, Left, Up, R1.

Unlock Tokyo time trial:
Press L1, Left, Right, R1, Left, Right, L1.

Unlock Subway time trial:
Press L1, Left, L1, R1, Right, R1.

Choose mission:
Press Up, Down, Circle, L1, R1, L1, Circle, Down, Up.

Extra minute:
Press Down, L1, L1, Circle, Circle, R1, Up, Square, L1.

Extra Tune:
Press Down, L1, L1, O, O, R1, Up, Square, L1

More Cash:
Press L1, R1, Up, O, Down, Square, Left, R1, L1

More Nitros:
Press L1, O, Down, L1, Up, Square, O, R1

Infinite Fuel:
Press L1, O, Right, L1, O, R1, L1, Up, R1, Down

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

Debug Mode:
During any mission pause and press: Up, Right, Left, Down, Circle, L1, R1, R1, L1, Circle, Down, Left, Right, Up.

Blood Mode:
Press L1, Down, R1, Left, L1, Right, R1 to activate Blood Mode.

Angel Mode:
Enable Blood Mode, then press Up, R1, Down, L1, Up, Left, R1, Right, L1.

Car select:
Enable the Tune up menu. At the car tune-up menu, press Left, R1, Right, R1, Left, R1, Right, R1.

Level Passwords:

01 - sSFTgfCnZ
02 - rnLVbbJnY
03 - frJKZYCPf
04 - rmKKFFfnk
05 - gvLKCgkmp
06 - gvLKBgkmb
07 - gvJVCskmp
08 - gvBVYshNv
09 - 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