I got a score of around 4100, it would be nice if the final screen told me my highscore. Overall, the concept is pretty simple, but it's done well. No major bugs or anything. I think just a bit more varied gameplay would be nice, maybe introduce a turret that you control, and it needs ammo or something. Also, the difficulty kind of felt the same for the majority of it, to the point where it felt like I needed to let myself die so it would end. I really like the art and the music though.