neat! i managed to get to around 28 which is not too impressive. nice game loop, it's almost got a certain tempo to it, like a sense of rythm. nice visuals too! i'm afraid to say i wasn't too spooked, but i did get kinda angry at the monsters, to the point of almost trying to use up all of my "light shots" on them before reloading at the light source. which probably contributed to my unimpressive score lol
i don't really have any critiques apart from the audio, and i think that's already been mentioned - i didn't mind the sounds at all tbh but some variety would be nice. oh, and positional audio for the monsters approaching would be neat too, but i guess that might be by design (or, that's one of those webgl glitches you mention). oh, the webgl version ran totally fine for me, i don't think there were any glitches