There's potential here, unfortunately the bugs are really hurting the overall experience. I also feel like the enemies are bullet sponges which makes the gameplay a bit grindy.
Graphics are fairly coherent despite the mishmash of asset packs, but the feathered dynamic lighting feels really out of place for the retro look. The dialogue could have really benefited from a more compact font choice — there are plenty of free pixel fonts that will allow you to fit more.
I liked the intro music and I wished there was something along those lines for the main gameplay as well.
Good effort, keep it up! :)