Based on 1993 Quex Development/Alternative Software PC (DOS) release.
PC versions: EGA, VGA
On the title screen, type any of the following followed by Return:
“PIXIE”______________________Start on Sea World (level 2)
“BULLYS SD”_______________Start on Canyon World (level 3)
“GW RATS”____________________Start on Sky World (level 4)
“TANGERINE”____________________Flashes screen but unknown
“NATAS LIAH”______Invulnerability and activate level skip
If you use the last cheat (read it backwards) the text at the bottom of the screen will change and tell you that the Help key can now be used as a level skipper.