These are the cheat codes for Descent.  Note that the game will ridicule you
for ever after if you cheat.

gabbagabbahey: cheat mode on 
mitzi : gimmie the keys
scourge : obtains most  weapons
farmerjoe : warp (perhaps to other levels?)
guile:  Cloak on
racerx: God mode
twilight: lots o shields
buggin: Everybody goes turbo
bruin:  Grants an extra life
Bigred: All weapons
Flash:  Shows path to exit
ahimsa: Make them stop shooting.