Slip between the cog’s teeth to avoid getting squashed!
Stand on one of the teeth of the cog in Point 3 and ride it up above the screen. Jump right, toward the wall, to find a secret area crammed with coins and two 1-Up Mushrooms!
After you collect them all, take the pipe back down to the main level.
Wait for the Thwomps to begin rising before you pass underneath them. Don’t try to jump over them after they drop: if you do, you’ll often meet with more disastrous results than if you slip underneath them. Dash past the Thwomp area to clear it quickly.
Boss Battle
Larry hasn't changed his tactics much since the last time you met him. This time, he does have some extra help, however. Just before the battle begins, a Magikoopa zooms by overhead and sprinkles the area with magic.
When he does, the floor turns into pillars that rise and fall, making the ground uneven. If you can’t blast Larry Koopa with fireballs, wait for him to drop into a position lower than you, and then jump into the air to Ground-Pound his head.
After hitting Larry, he’ll retreat into his shell like before and bounce back and forth. Simply stay out of the way, near the opposite side of the room, and wait for him to re-emerge. When he does, dodge his blue projectiles, and bounce on his head two more times to defeat him.