While playing press start button, while on the menu press enter the code to activate it.

Code	Effect
R, Up, L, Up, Down, R	Change Costume
L, L, R, R, L, Left	Disable Super
Left, L, Right, L, Up, and Down	Infinite Super
R, R, L, R, Left, Up	Infinite Dashes
Up, Down, Down, Up, L, R	Invincibility
Left, Left, R, Down, Down, L	Max Skills