Start the game with the command-line parameter YIPPEEYAHOO, then during the game press:
How:
+ - add time
- - sub time
K - kill all enemies on screen
R - return from dead
F1 - show position (press again to disable)
F3 - player on/off
F6 - ruler
Shift + T - add energy
Shift + K - sub energy
Shift + R - show room number and jump right
Shift + W - show room number and jump left
Shift + I - turn screen upside down, press again to restore
Shift + B - show prince only, press again to restore
Alt + N - skip to next level
Alt + D - create DUMP?.TXT
