To activate these codes you must first hold Ctrl-Shift-Z, then type the codes in exactly as written:
Supermarket for the Rich = Access good items
Some call me Tim = Destroys all enemies
Ask a Glass of Water = Teleports party to beginning of chapter
Gotta have magic = Aren learns all the spells
Man Does My Leg Hurt = Heals party
Why am I so dull = Maxes out all character traits