RTA Guide/Scary 'Shrooms, Red Coins
Scary 'Shrooms, Red Coins is the third mission of Tall, Tall Mountain.
With 100 Coins
There are 62 coins in the slide, including the "secret" coin on the left corner before sliding.
In order to avoid the invisible wall at the edge before the star, longjump along the right side (around the corner at the edge of the fall) and after making it past edge, glide to the left and hit the star.
For this route, you skip one of the red coins and don't skip any coins on the slide (end slide with 98 coins). Then instead of getting a bomb at the end, you finish with the last red.