Invincibility
Press [F1] to pause game play. Type rhiannon to resume game play, then press [F9] for invincibility.
Items
Enable the "Invincibility" code. Press [F1] to pause game play. Type rhiannon to resume game play, then press [F8] for nine keys, nine spells, and $10,000.
Teleport to shop
Enable the "Items" code. Press [F1] to pause game play. Type rhiannon to resume game play, then press [F6] to go to the shop.
Level skip
Enable the "Teleport to shop" code. Press [F1] to pause game play. Type rhiannon to resume game play, then press [F7] to jump to the next level.