I can see where the lighting issues may have messed up some visuals, but even despite that I think it looks really good. I wasn't able to access the options menu if that was implemented, and I also didn't see any fullscreen option on the page, which made things harder to see (even when zoomed in on the browser). The sounds were good, but the death sound is way too loud, it jumpscared me when I first heard it lol.
Aside from that the game plays well and looks great, I love the shadow puppet style of it all. I can definitely see this being a full game with different forms and movements concept taken even further.