Start the game with the aquabug command line parameter. Then, press one of the following keys to activate the corresponding cheat function. 


Effect Key 

Toggle text shadows S 
Increase or decrease text shadow gray P or L 
Increase or decrease text shadow alpha O or K 
Increase or decrease bitmap shadow gradient I or J 
Increase or decrease bitmap shadow offset U or H 
Increase or decrease bitmap shadow alpha Y or G 
Toggle level cheat mode C 
Change current class [Insert] or [Delete] 
Change current level (only for Class 4) [Home] or [End] 
Change current stage [Page Up] or [Page Down] 
Toggle narrow stage [F8] 
Toggle debug options D