Slayer (3DO)

Slayer cheats:

Invincibility:
Press P during game play to display the backpack. Hold RS + LS and press A, B, A, C, A, B. The sound of a magic item being used will confirm correct code entry. Any damage taken by your character will not affect his or her remaining hit points.

Other Sites you may consider
CheatServer.Com
Cheat Codes Club