Thanks a lot for the detailed feedback!
You are very very right about the things you pointed out. We are well aware of those issues (and a lot more) that we couldn't fix anymore due to the jam time running out. There wasn't really time to fine tune the lighting and/or monster placements as well as contrasts of the platforms or the tilemap in general.
BUT we do intend to work on a post jam version with more content and (hopefully) all the balancing and ease of use issues fixed. So, stay tuned if you're interested :)