Cheat Mode
Ingame press [~] (pressing the [Pause] key is useful), enter one of the following codes and press [Enter] for applying.
GiveMeAll - All following effects in the one mix
GiveMeFuel - Full fuel
MoreLives - Full lives
HealthMe - Full health
GiveMeInvulnerable - 30 sec. invulnerability
GiveMeInvisibility - 30 sec. invisibility
GiveMeAllAmmo - All guns, rockets, missiles, lasers, plasma cannons and nuke