A message at the bottom of the screen will confirm correct code entry.
Get Invincibility
Press L, R, L, R, L, R, L, R at the main menu.
Get Unlimited ammunition
Press White(4), L, R at the main menu.
Level select
Press X, Y, White(2), X, Y, White(2) at the main menu.
Flame on
Press X, Y, B, X, Y, B at the main menu.
Unlimited Hero Time
Press B, X, Y, White, R, L at the main menu.
Liquid metal textures
Press B, Y, X, B, Y, X at the main menu.
Big heads
Press R(2), L, R at the main menu.
Small heads
Press L(2), R, L at the main menu.
Pin heads
Press L(2), R, L at the main menu.
Exploding fists
Press B, X, R(2) at the main menu.
Hot fists
Press X, B, Y, L(2) at the main menu.
Exploding bullets
Press L, R, White, Y, B at the main menu.
Hero mode
Press L + Y with a full special meter.
I Got The Power mode
Press White, B, White, B, White, B at the main menu. A message at the bottom of the screen will confirm correct code entry. All characters in the game will have blue electrical energy flowing all over their bodies. It also seems to give your weapons more knockdown power.
