This is really, really good! The art, music, and SFX are all excellent. The core gameplay is very good too, though it took me a minute to realize the "glimmer" sound meant a shadow was being cast.
If I had one critique, it's that I wish jump and interact weren't the same button. I kept accidentally throwing lights instead of jumping. But overall, phenomenal job!!
Sound Designer here: I'm still working on that "glimmer" sound and if it was the right representation of what's happening in the game.. I'll try some things in the next couple of days, hopefully we'll find something that works!
About the space button, I think you are right, we might be able to change that in a future update!
Thank you for your constructive feedback, and for your comments : ).