DOOM CODES SYSTEM: SUPER NINTENDO COPYRIGHT 2000 THRASHNET GROUND ZERO SIX PRODUCTIONS ALL RIGHTS RESERVED ------------------- WEAPON UPGRADE TRICK Get the Chainsaw in stage 2 then fire off all the ammo for your best weapon if you hold the fire button down as it empties your gun will upgrade to the next best weapon. This trick is unpredictable and you may scroll back to the chainsaw instead.