Wear heavy armor with insufficient strength:
You need the Bless spell and an Ylside armor. You can put it on a character if you have 10th level Strength. Use the Bless spell (you need a sufficient leve of magic) and put on the armor and weapons. When the spell wears off, you can still wear the armor.

Rune codes:
Turn off the Arcade Magic option, cast a spell with X, then enter the Rune Sequence.

Thanks to Revolution reader Monkeydoo!