Level skip:
Hold Down/Right + Y and press Start at the title screen. The answering machine messages will begin to play to confirm correct code entry. They also may be heard by playing track eight on an audio CD player. During game play in a side-scrolling stage, press L + R to jump to the next level. During game play in a gun mode stage press Start on the gun, and select the option to exit the game. Instead of quitting, the game will advance to the next level.

Double control:
Hold Down/Right + Y and press Start at the title screen. The answering machine messages will begin to play to confirm correct code entry. They also may be heard by playing track eight on an audio CD player. Select D-pad control and press B to select two players. Highlight the "Let's Play" option on the confirmation screen and press C. Remove the controller from port two when the screen fades and before the next part of the game loads. Both characters will now be directed by controller one.

Extra continues:
Start a two-player game and allow Drywall to die to obtain six continues.

One player Drywall:
Drywall may be selectable as player one after completing the game. The story line and FMV sequences will be altered.

Bonus graphics:
Complete the game with SCUD.