Savage Banner Skin:
Beat the game and then buy it from the shop for 1 million smash points.

Enter the following codes at the Code Input Screen:
DESTROY Double Hulk's damage abilities
DEUTSCH German flag shorts for Hulk
CABBIES All Vehicles Become Taxis
BRINGIT Double Value of Health Pickups

Weather Cheats :

Good Weather
L1, L2, R1, R2, R2, R1, L2, Triangle

Fog
L1, L2, R1, R2, R2, R1, L2, X

Cloudy Weather
During gameplay press L1, L2, R1, R2, R2, R1, L2, Square.

Rainy
L1, L2, R1, R2, R2, R1, L2, Circle

Unlimited Nitrous:
At the title screen, enter Left, Up, Left, Down, Left, Down, Right, Square.

Unlimited Speedbreaker:
At the title screen, enter Down, Right, Right, Left, Right, Up, Down, Square.

ACTION REPLAY, US
There are 4 codes for this game.

(M)
0E3C7DF2 1853E59E
EE8E19A2 BCB978B2