
In the ninja academy level, look for the platform at the end a Jonin is standing on. Behind the platform is a wall with 2 lines at the bottom. This looks like a design, but it is really a tunnel. Crawl through, and there will be a snake. Walk a little further and a giant scroll will appear. Grab it and it will give you a life and the fourth jutsu. This works with all of the characters:
Once you've unlocked the night stages, head to the village mountain. Instead of fighting Haku, Zabuza, and Orochimaru, you will fight Temari, Kankuro, And Gaara.
Perform the actions below to unlock the following characters, modes and more: