I like the theme and the overall visuals.
I do think it's a bit too bright, less bloom would feel better (in my opinion). I had some trouble with the controls because whenever I crouched and tried moving forward, I'd accidentaly close the browser tab (CTRL+W). I also found the jump a little bit floaty.
But other than that, the concept is solid. The retro feel is super cool and I like FPS games that have those kinds of gimmicks. Good job!