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The Piledriver move

The Piledriver is a powerful move that Wario can perform in Wario World. By picking up an enemy, the player can then jump and press R Button. Wario will spin in the air and pound the enemy headfirst into the ground, almost always defeating it. In addition, the Piledriver sends out a shock wave that can damage or defeat any nearby enemies. It is similar to the Ground Pound, which Wario can also do.

Wario must use a piledriver to enter steel trapdoors.