At the main menu, type NUMBERONEDACRESTREET. You will now
have access to several cheat options.

During gameplay, hold down SHIFT and type in these codes:

SOLIDASAROCK - God Mode
INVUNERABILITY - Invulnerability
HAVEALL - Infinite lives/weapons
INFINITELIVES - Infinite lives
INFINITEWEAPONS - Infinite weapons
SUPERDAISY - Kill all enemies with one shot
SUPERSHOOT - Kill all enemies with one shot
WIREWEWAITING - Turn off textures
WHATSTHEPOINT - Turn graphics to dots
FLATBROKE - No shading
GOURAUD - Gouraud shading on
OLDMACDONALD - Protect farm from jumping cows
FLYMETOTHEMOON - Racing in the moon

Function keys turn cheats on&off:

F2 - Easy Shoot
F3 - Invulnerability
F4 - Infinite lives
F5 - Infinite weapons
F6 - Smart bomb
F7 - Quit
F8 - Stores current situation
F9 - Reloads stored situation
F10 - Frame wait on/off
F11 - Restart