The visual presentation of this game is stellar, you did a great job! You managed to keep a good consistent tone throughout as well, which is brilliant.
I think the game would benefit from some additional on screen instructions, I only realised how to pass the screen with the pit after checking the controls menu. There are a few bugs, like the finicky main menu and very sensitive level transitions, but people seem to have already mentioned those.
Overall this is a really good game, and you did a lot for a jam entry. There's definitely an interesting concept here to explore post-jam if you wanted to!