From the Super Mario Wiki
The player must help Samus Aran go across the stage. When she is tapped, she curls into her Morph Ball and continues moving. If she is tapped again, she pops back up. Towards the middle of the stage, a Skree must be rolled under, or Samus is damaged. After that, she must pop back up to grab a Missile Tank on the other side and win the game. If the player cannot avoid the Skree or fails to grab the Missile Tank, the game ends in a loss.
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