Various cheats
     Enter these codes for added oomph: trymeon god mode

Cheat code:             Effect:
givitup                 all weapons
urdustd                 turbo
packin#                 extra ammo for weapon #
tufenuf                 shields
jumpnit                 skip to next level
wormit#                 warp to level #
ssmokin                 1000 turbo
icunomo                 permanent invisible
scopiet                 oscilliscope
stpnshp                 hover (press Ctrl key to activate)