Cheats:

 TOTLPWR   Main energy 100%
 URDEAD#   The # represents a weapon from 0 - 9
 MAXMEUP   Hull 100%
 IMPUMPD   Gives the player all weapons!
 AUNTEM#   This warps the player to planet 1 - 8
 IMSTUCK   This skips the current mission and goes to next planet
 STEROID   Invincibility
 FRAMEIT   Shows the frame counter
 URAGONR   Secret weapon
 IMSTUCK   Mission skip

 From Brent Phillips, mimpchnk@paloverde.com and Sander Wittenberg,
 wittenberg@pi.net