Legend of Oasis

Two Player Code from Kenneth Miller
Go to an area with NO enemies. Press the Z button, then hold down the L shift and X button. When you release them another Leon will appear. To get rid of him, repeat the process.

List of spirits from Pruthisith
spirit of fire: he can destroy the old trees and good for fight with the boss.
spirit of water: she can destroy fire pole and make the ice.
spirit of tree: he can dig the hole when you met the crack and he can eat enemy for 1 time.
spirit of sound: he can make the super sound to destroy the crystal pole.
spirit of shadow: he can destroy Thorn the green monster and he can see the invisible thing.
spirit of air: she can fly all the way straight and she can do the electric power ball.

To Fight the bosses all over again from Reuben Wong Chun Mun
Whenever you are in a Spirit Shrine, Use Ditto to put out the two torches in the roomwhere one of the spirits slept. You should then hear a loud sound. Exit the room and then go back. A boss should await you.