Lode Runner 2

Cheat mode: 
Press [Esc] during game play 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. A sound will confirm correct code entry.
Return to previous level - [F3]
Level skip - [F4]
Five more lives in single player mode - [Alt] + [F12]
Unlimited bombs in single player mode - [Alt] + 8