Really like your game! This jam I also wanted to try to make a simple minimalistic 2D game with the same style of this game, but I failed and mine looked horrible haha. Your game looks awesome!
I like how the scene transitions are simple and nice, also the shooting feels good and impactful! Though the movement is a little floaty but it's just my preference to have tight 2D movement. This type of movement works with your game well, I think. Great job!