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

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
Trainer: All levels and cars unlocked by Robin Smith