To be Minion: L1, Up, Down, Left
To be Sweet Tooth: Up, L1, Triangle, Right

Eternal Life -
 Hold R1 and L1 then type up, down, left, right, right, left, down, up
Infinite Weapons -
 Hold R2 and L2 then type up, down, left, right, right, left, down, up
Mega Guns -
 Hold R2 then type up, down, left, right, right, left, down, up

 All codes should be entered during gameplay.

 Last Level Passwords
 In 2 player challenge mode, at the Battle Grounds select screen,
 enter the following codes:
 •Warthog - CIR, X, TRI, CIR, _, CIR
 •Axel - TRI, SQU, TRI, SQU, _, SQU
 •Grasshopper - X, _, X, SQU, SQU, _
 •Hammerhead - CIR, CIR, CIR, _, TRI, X
 •Grimm - _, SQU, TRI, CIR, CIR, TRI
 •Outlaw - _, CIR, X, _, TRI, _
 •Shadow - CIR, TRI, _, TRI, CIR
 •Slam - SQU, _, SQU, TRI, CIR, X
 •Road Kill - TRI, CIR, X, TRI, SQU, X
 •Thumper - TRI, _, SQU, SQU, X, CIR
 •Specter - X, CIR, CIR, CIR, _, TRI
 •Twister - X, SQU, _, SQU, TRI, CIR

 At any time during play, perform these combos for
 special advanced attacks:
 Cloaking:       Right, Down, Left, Up
 Freeze Blast:   Left, Right, Up
 Jump:           Up, Up, Left
 Mine Attack:    Right, Left, Down
 Napalm:         Right, Left, Up
 Rear Attack:    Left, Right, Down
 Rear Freeze:    Left, Right, Down, Left, Right, Up
 Rear Napalm:    Left, Right, Down, Right, Left, Up
 Shield:         Up, Up, Right

To be the 2 secret characters - At the Character Select screen do the following:
To be Minion: L1, Up, Down, Left
To be Sweet Tooth: Up, L1, Triangle, Right

God Mode- While holding L1,L2,R1, and R2 press up, down, left, right, right, left, down, and
up.