Cool Game, didn't like the spawns of the ghosts as they spawn right Infront of you causing you to lose health and you only get three so its really easy for a lot of them to instantly kill you. Also the bouncing bullets can hit you more than once, I had three hp before one bullet bounced a bit and instantly killed me.
Also some oddities with the grass, It looks like the blocking of the path with the grass is intentional but there's still some stuff that was a bit strange for me. One was the enemies being able to shoot through them but not me, and the other was the blocking which seemed intentional but it just encourages clipping through the walls later on in the gameplay because if you beat all the enemies and were trapped that's the only thing you could really do.
Overall music and graphics is cool but if you ever wanted to look back on this, maybe consider these for some improvement.