First thing this game needs, is a "how to play" -There's a lot of information lacking when starting. When I spawned in I had to ideas what to do. There was tutorial texts but couldn't read any of it, try changing color to something else and make them last longer.
I understand there's a video tutorial and description on how to play on your itch-page, but ask yourself this question: "If I need my players to read additional stuff outside the game, in order to understand my game, is it a good game design?". -My personal answer is no :p.
Besides the functionality, I really like the player movement, feels nice and well polished! I think that's the basis of a good platformer. The concept is also cool, with more polish this could be great! Well done.