From the Super Mario Wiki
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Luigi starts in the castle, with stairs going to a tilt lift. The lava will start to rise, and a few Bowser Stunners will appear. After the Bowser Stunners, a Pipe Cannon will appear, along with another tilt lift. A couple of Bowser Stunners appear just before the first door. After that is another Cannon Pipe and a third tilt lift. More Bowser Stunners and Parabombs appear before the door to the Goal Pole.
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