While playing a game, press [Esc] to display the options menu, then type "glazed donut" to enable cheat mode. Then, enter one
of the following codes to activate the corresponding cheat function. If you entered the code correctly, you will hear a sound.

CHEAT CODE - RESULT 

     [F3] - Return to previous level 
     [F4] - Level skip 
     [Alt] + 8 - Infinite bombs in single player mode 
     [Alt] + [F12] - Five more lives in single player mode