loving the music (same goes for the ObjectA bandcamp tracks), are you putting the vocal version in the game as well? could be super cool. i love the style of game, but i didn't really get the nightmare version - it was more or less just dark - is that a WebGL thing or did you run out of time?
Also: have you tried out post-processing effects? they are super easy to implement (even with built-in render pipeline) and would go very well with your theme (i'm thinking bloom, chromatic aberration, lens distortion and such)