From the Super Mario Wiki
Captain Toad starts in a corner next to a blue, rectangular tilting platform divided in half. On the first tilt platform, he should stand on the first half, where a Spike will throw a spike ball heavier than the player that will throw Captain Toad to another platform. Captain Toad must avoid the spike balls and being thrown off tilt platforms by them to reach the Power Star at the top of the course.
The Pixel Toad can be found on the wall under the P-switch after it is pressed.
A 8-Bit Luigi can be seen underneath one of the small bridges.
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