Ty-Foos are enemies that you can’t defeat but they don’t directly harm you either. Instead they blow powerful gusts of wind to knock you into spikes.
Move past the first Ty-Foo and grab the Fire Flower from the block. Defeat the Goomba on the skate in the next section, then use the skate to slide across the spikes at your right and claim the Stamp unharmed. You can get another Fire Flower by climbing to the top of the tree amidst the frozen lake.
Now climb up the hill using the stairs, avoiding the Ty-Foo blasts. Overlooking the spikes on the cliff are two Ty-Foo and a ? Block that you can jump upon to reach Green Star #1 .
You’ll need to time a slide all the way down the ramp to the Clear Pipe that takes you to the Checkpoint Flag . On the frozen lake are plenty of Goombas, one will give up it’s skate so you can cross the spikes on the left side and enter the Mystery Box. Here you need to quickly jump in a skate then race past the obstacles to find Green Star #2 .
Back on the frozen lake, check the right side for a Fire Flower then move to the back wall where a gust of wind comes up from a pit. Time your jump to snag Green Star #3 and be thrown back out of the pit on the far side.
Dash through this last section to a pipe and the Goal Pole.