I enjoyed the game. I got stuck on the bridges and mushrooms of the first world, and could not finish lvl 8 at all! The goal is just to high up. For some reason the upwards momentum just stops. I got 2 close calls, but to no avail. You can check the whole gameplay here: https://www.twitch.tv/videos/1084993502
Its hard but possible! You have to use the glider to maintain upwards momentum at the end: https://www.speedrun.com/barjis_grappler/run/ywk30ppy