Yeah I totally hear you for the shooting! I think this kind of shooting would have worked better if I had constrained all movement (enemies and player) to the grid, then that kind of shooting-where-you-are-looking would make more sense in that context, kind of like an old GBA game.
Also, there is music (or a looping ambient track) in every single scene, although I lowered the volume a bit to ensure it was not too distracting. I had no issues with the music when I tested the build but I will check with other devices in case something went wrong, I will try to figure it out!