I wish I could give a high score, you really have potential. Sadly though, I had a lot of trouble with your game. Firstly, and this is a big one, when I was playing your game, it starting slowing down to unplayable levels. Perhaps it's an optimization error or a poorly built web version. Second off, I couldn't really see anything, and especially not the player themselves. Maybe try simplifying your code, fixing the web version, and redoing the light engine. It can be a fairly good game with some upgrades done, but as of right now I can only wish you luck on your later works.

Nice take on the theme, hard to see, maybe dimming instead of full black or giving a direction arrow. Good atmosphere.