If you continue more than 100 times during gameplay, you will be given infinite continues to complete the game with.

If you continue more than 15 times, you'll be given three continues to complete the level.

If you continue more than 30 times, you'll be given four continues to complete the level.

To trade half of one health pack to gain five seconds, pause the game and press UP, UP, DOWN, DOWN, LEFT, RIGHT, LEFT, RIGHT, X, CIRCLE.

To trade five seconds of time for one half of a health pack, pause the game and press CIRCLE, X, RIGHT, LEFT, RIGHT, LEFT, DOWN, DOWN, UP, UP.