D2X-XL: Descent 1 and 2 revived and enhanced! Cheat codes.

Cheat Codes

Descent 2

ORALGROOVE	All Keys.
ALIFALAFEL	Accessories.
ALMIGHTY	Toggle invulnerability.
BLUEORB	Shield boost (v1.1).
BITTERSWEET	Psychedelic walls.
DELSHIFTB	Warps you to the exit and blows the reactor.
DUDDABOO	Bouncing Weapons.
FRAMETIME	Displays frames per second.
FREESPACE	Level Warp.
GODZILLA	Makes it easier to destroy robots by running into them.
GOWINGNUT	Guide Bot attacks the robots.
HELPVISHNU	Spawns additional Guide Bots.
HONESTBOB	Wowie Zowie Weapons.
IMAGESPACE	Robots stop shooting (v1.1).
LPNLIZARD	Homing Weapons (every weapon will home).
PIGFARMER	Use it once and it displays "Hi John!!!". Now reduce the size of your screen. Use it twice and it displays "Bye John".
ROCKRGRL	Full Map.
SILKWING	Robots kill each other (v1.1).
SPANIARD	Kills all of the robots in the mine. Use it twice and it will toast the Guide-Bot.
WILDFIRE	Rapid fire (v1.2).

D2X-XL

CRYPTONITE	Unlocks all doors. If typed again, removes all walls.
DODGETHIS	Kill all boss robots.
ELECTRO	Energy boost.
HESTHEONE	Unlimited slow motion and speed.
ITSAROCK	Toggle cloak.
JINGLEBELLS	Mark a path to the exit with energy powerups.
JUDGEDREDD	Kill all thieves in the level.
LEMONTREE	Give afterburner and unlimited afterburner charge.
MINEMINE	Give all inventory items, all weapons, 200 shields and energy each, cloak player and make player invulnerable.
MINOTAUR	Mark a path from the current player position to another segment of the level.
PITAPITA	Kill all Guidebots in the mine.
PUMPMEUP	200 Shield and 200 Energy.
SCOTTMEUP	Triple Fusion.
SUBSPACE	Teleport to another segment of the level.

Descent 1

AHIMSA	Robots don't fire.
ASTRAL	Ghosty Mode: fly through doors (walls stay impenetrable).
BIGRED	Super wowie zowie weapons.
BRUIN	Extra life.
BUGGIN	Turbo Mode: everything (even enemies) speeds up.
FARMERJOE	Warp to another level.
FLASH	Mark a path to the exit with energy powerups.
GABBAGABBAHEY	Enable/disable cheat codes.
GUILE	Cloaking on/off.
LUNACY	Robots move fast and rarely fire.
MITZI	All keys.
POBOYS	Blow up reactor, kill all robots, place player in front of exit.
PORGYS	Mega Weapons.
RACERX	Invulnerability on/off.
SCOURGE	Wowie Zowie weapons.
TWILIGHT	Sets shields to 100 (regardless of current value).