i feeeeeel like the gameplay doesnt really make sense, but that aside the experience overall makes sense dont get me wrong. it's mainly that you wait for the density to spread out for all of the attacks before you can safely pass through which kinda slows it down too much, and the player shot is also so slow that you end up just kinda waiting for the enemies to stop shooting before you can actually go in and hit them.
with some constraints on the level to make actually fighting the enemies more worthwhile and the pacing better, and some more.. intentful? design for the enemies and attacks etc i feel like this would be very good. (except for the screenshake)
the visual style is excellent, and while im not a fan of the music genre personally it accompanies it extremely nicely. it just works.