Descent 2

Demo version:
GABBAGABBAHEY - You lose all Shield beside 1%
ZINGERMANS - Invulnerability
MOTHERLODE - You get better weapons
ALIFALAFEL - Extra items
EATANGELOS - Weapons become enemy tracking
CURRYGOAT - Give all Keys
JOSHUAAKIRA - Give whole Map
WHAMMAZOOM - Skip a level
ERICAANNE - Weapons jumps

Full version:
ALMIGHTY - Invulnerability
LPNLIZARD - Weapons become enemy tracking
FREESPACE - Skip a level
ALIFALAFEL - Extra items
SPANIARD - Kill all robots