Avatar: The Burning Earth (DS)
This game is titled Avatar: The Last Airbender - The Burning Earth in North America and Europe, and Avatar: The Burning Earth in Australia.
When you battle Toph at the arena, keep close to her. When she is about to launch an attack, run in close circles around her. By doing this you will dodge the attack and be able to attack her afterward as well. Stay away from corners and sides of the wall. If she attacks you and you slam into the wall, she can easily keep attacking you so you cannot get up and you will lose stamina.
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