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I-Ninja Cheats
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Big Head Mode
Pause the game and enter the following.
Code: Hold R and push Y(4). Release R, then hold L and push Y(2). Hold R + L, then push Y, B, Y
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Level skip
Pause the game and enter the following.
Code: Hold R and push X(3), B. Release R, then hold L and push Y(2). Release L, then hold and push R, X(2)
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Upgrade sword
Pause the game and enter the following.
Code: Hold L + R and push B, X, B, Y(2), X, B, X
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Battle Arena
If you want unlock the Battle Arena, get every grade, then you should get the Master grade. The Battle Arena will now be open in Robot Beach.
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Mow grass
Where there are grass, flowers, mushrooms, other foliage, objects other than crates and barrels, and certain decorative objects, you can cut them down to earn a few extra points towards your main score. This is useful in the certain levels that require a high score to earn the grade.



