Infinite Experience (better then the other trick)
You must have completed Chapter 8, and have Dashell.
This is, by far, the fastest way to level up.
This way doesn't get you very many coins. In fact, it gets you just
Enough coins to continue using it.
Go to the shop in Flipside and buy 10 Shock Shells. Now go to world 8-4. As soon as the stage starts, use a shock shell,
Then follow it (using Dashell) all the way down the hall. Once at the
End, use the return pipe and repeat. This gets you about 80,000 points per run through the hallway.
More tricks, tips and cheats for this game are right here - Super Paper Mario cheats
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