Cheat Codes
Shareware & Registered

BITTERSWEET - Toggling shifting walls
MOTHERLODE - Access weapons
WHAMMAZOOM - Level warp
PIGFARMER - Toggle background

Registered only:

SPANIARD - 1st time, kill all robots, 2nd time, kill boss & guidebot, 3rd time kill guidebots
BITTERSWEET - Psychedelic walls
GOWINGNUT - Your own guidebot bodyguard
YINGERMANS - Invincible
GODZILLA - Increase your ship size to ram things