Liked that the pixel art was on the higher resolution side of the spectrum and that there was a good amount of weapon variety, with each feeling distinct. There's also a lot of content here for just two weeks! Impressive you did everything yourself!
Bosses were a bit easy, but it was a nice change of pace to have one at the end of the levels regardless. Also thinking myself, the bullets, and the enemies could all have moved a bit faster and it would have matched the style and design of the game a bit better, but maybe that's just me really wanting to run and gun, haha.