Beat the game, but I wasn't really sure what getting the small green circle did. I assume the large green circle just lets you beat the game. I kinda agree with i-zan about how the slow speed makes it a little frustrating, but once I figured out how to win even despite that, it was pretty satisfying.
Overall, decent platformer if a little jank, but still pretty impressive to get this done in 9 hours as one person!