Duke Nukem - Shrapnel City

Start the game with command line parameter ASP
(eg dn1.exe ASP9 and you have the following key
combinations in the game:
Code   Result    
———————                     
G+O+D - Full health
G+O+W - Skip to next level
Press [Backspace] and [PageDown] together because
this will give
you full ammo and all keys.