This a great entry with a great concept that has a lot of potential still.
I thought it was a bit strange that you could get stuck on the mirrored platform if it moved down too much, but then the last(?) level introduced the idea of using the moving platform and it all made sense. I wish that was developed a little further, that was my favourite part!
I don't know if you want to continue with this project, but here's some random thoughts and tips (maybe for other projects as well). Do with it what you will.
If you want to have downtime between the levels, consider having something to do for the player. Collecting e.g. coins, having visually interesting things (in the background), a little more involved platforming. Just pressing right on a blank background is a bit boring.
Why stop the player in their tracks to read multiple pages of text? Have it running at the top or whatever while we're in the chill sections. Lots of players just want to keep running. Also try to strip down unnecessary text ("you're trying to get to a campfire" is never really necessary, I'm just going to run right anyway!)
(sorry if it's too much lol, I really enjoyed playing through this!)