Stomp on the Thwomp
From the Super Mario Wiki
The mission's Power Star is located at the very top of the clock. In front of the player's starting position is a large pendulum followed by a conveyor belt and a rotating block. Afterward is another pendulum followed by a ramp leading to three rotating blocks. Above those is a platform that has a large clock hand swinging around nearby. After the hand are a number of spinning platforms leading to a cage, and climbing onto the cage will lead to a small lift followed by a pole with an Amp circling it. Climbing up the pole, the path will split and the player needs to take the lifts leading further up the clock. Above the lifts are rotating blocks leading upward. Up the rotating blocks is a bending platform with blocks acting similar to Bomps placed under a cage followed by a couple of conveyor belts leading to a long, bending platform with several platforms and blocks breaking it up. At the top of the platform is another clock hand that will bring the player to an area with a Thwomp that will carry the player to the Power Star.
Like the other missions, it is possible to complete this mission with the clock stopped; however, in the original, it can be difficult to get to the conveyor belt the Thwomp is on when doing this, as it necessitates very precise Triple Jumps and Wall Kicks.
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