Instructions in-game. This game has been sitting in my unfinished projects folder for seven years, since before I left Scratch. Recently, I was showing the platform to my younger sister, and I decided it was time to finish it and let it see the light of day. I hope to add more levels and more mechanics (grappling hook?) later on this summer, if I can. Thank you all so much for all the love the Cheerio the Herio stories got back in the day. God bless!
I learned how to make the physics used in this game in this awesome tutorial by @djpro: http://scratch.mit.edu/projects/34429446/ .