In battle #14, in the center of the battle area, you will find a lizard man, a sorcerer, and an evil pixie. When you kill the evil pixie, it will keep coming back to life again and again in the doorway to the next battle. You can keep killing it over and over for more experience. To help kill it and keep from dying, put Graham directly over the doorway and shoot the evil pixie. Make sure Graham has the Robin Arrow from a previous battle, or the assault shell that you can get in the shop after Rhode joins you; it costs 2,200 gold. After a while, the sorcerer will run out of magic and he will no longer be a threat. But remember, once you kill all the enemies, the battle will end. So, keep the sorcerer alive until you're done killing the pixie.