Invincibility

To gain the ability to be invincible, first go to the Options screen. There, go to Game status; then highlight any character and press L1 and R1 at the same time. Scroll in the code ELBICNIVNI and then press X to apply it. Now lets see who's boss! :)

Ultra Resolution

For ultra resolution put in the password: GO_MAX_REZ

Alien

In the Arizona level, blow up the observatory and you should hear and big BOOM. GO to the crater in the center and there will be a meteor in there. Blow up the meteor and a giant ant will come out and shoot everyone. Kill the ant and another meteor hits. You can do this as long as you want.

All Cars

LLA_KCOLNU

Special Attacks

Interceptor Missiles

Attack 1: Up, Up, Down, Machine Gun 
Attack 2: Up, Up, Up, Machine Gun 
Attack 3: Up, Up, Right, Machine Gun 

Bull's Eye Rockets

Attack 1: Up, Down, Down, Machine Gun
Attack 2: Up, Down, Up, Machine Gun 
Attack 3: Up, Down, Right, Machine Gun 

Sky Hammer Mortar

Attack 1: Down, Down, Down, Machine Gun
Attack 2: Down, Down, Up, Machine Gun
Attack 3: Down, Down, Right, Machine Gun 

Bruiser Cannon

Attack 1: Down, Up, Down, Machine Gun
Attack 2: Down, Up, Up, Machine Gun 
Attack 3: Down, Up, Right, Machine Gun 

Roadkill Mines

Attack 1: Left, Right, Down, Machine Gun
Attack 2: Left, Right, Up, Machine Gun
Attack 3: Left, Right, Right, Machine Gun 

Brimstone Burner

Attack 1: Right, Left, Down, Machine Gun
Attack 2: Right, Left, Up, Machine Gun
Attack 3: Right, Left, Right, Machine Gun 

Bonus Characters

Complete the following tasks to unlock each character in the game:

Coyotes

Lord Clyde: Complete all objectives in quest mode with Nina Loco, Molo, and 
Dallas 13.
Obake: Complete all objectives in quest mode with Lord Clyde. 
Boogie: Complete all objectives in quest mode with Obake. Note: You cannot 
play Quest Mode with Boogie. 

Vigilantes

Houston: Complete all objectives in quest mode with Sheila, John Torque, and 
The Flying All-Star Trio.
Convoy: Complete all objectives in quest mode with Houston.
Dave's Cultsmen: Complete all objectives in quest mode with Convoy. Note: You 
cannot play Quest Mode with Dave's Cultsmen. 

Drifters

Chassey Blue: Complete all objectives in quest mode with Astronaunt Bob O, 
Garbage Man, and Agent R. Chase.
Padre Destino: Complete all objectives in quest mode with Chassey Blue.
Dusty Earth: Complete all objectives in quest mode with Padre Destino. Note: 
You cannot play Quest Mode with Dusty Earth.

Play Your Own Music

Pause the game, open the PlayStation lid, and replace the game disc with an audio CD. When the game resumes, the music from the CD will begin playing. A prompt for the game CD will appear after the level ends.

Alternate Vehicle Color

At the vehicle selection screen, highlight a vehicle and press Circle to change its color or intensity.