Liked it! It has a good scene, a good game mechanic and a wonderful music that complements it very well.
If I can suggest something, the change of the visuals (effects in different parts of the map) are a little distracting, and (in my case,I have some visual problems) it makes me a little dizzy. I would recommend to have an option to turn it off or to reduce them.
Even so, visual problems a part, it is a good game with a good idea. If you can expand it after the jam, do it, please.