Great work! Here are some thoughts I had while playing your game:
- The music is great and atmospheric, just a tad bit loud. Possibly being able to control the volume would be great!
- I love the minimalistic art style and how the background of the game matches and fits in with the background of your itch page. It's a small detail but it looks as if your playing the game in the page itself and it's fantastic.
- Very detailed and polished UI element and screen transitions. I think the effects you made for when the character ends the level are perfect.
Overall your game is very detailed and extremely polished. While it is simple, the simplicity is done perfect and I can see you put a lot of work into it! Well done.