From the Super Mario Wiki
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The level features four Mini Marios, though not necessarily in the same starting positions.
Three Mini Marios begin at the left, "stacked" on each other, while the other begins near the very center, with the exit door near the bottom right. In order to reach it, they must simply be guided via a series of Cannons and Red Girders to it, while avoiding the Capture Kongs.
The M-Token is located at the middle left, in an alcove with a Mini Mario and a Capture Kong. To collect it, a Mini Mario must knock out the Capture Kong via sliding, then head left to it.
Mini Mario Card
The Mini Mario Card is located near the bottom center, in between two Cannons. A Mini Mario must simply use the Cannon on the left in order to reach it.
In order to earn a trophy, the player must score 14700 points.
In order to earn a trophy, the player must score 14100 points.