I like the retro 8-bit style but it kind of hurts my eyes (or maybe its a sign I need to go to bed). I also was confused when I saw coins stacked on one another, as I thought they were like a barrier or some terrain. I also didn't know you could buy more drones the first playthrough and easily finished with just fire rate and speed. So, I think it would be good if you gave the player a reason to invest in all three or make them feel like they need all three somehow (like maybe add an enemy that the drones can't detect or something). Just a little more complexity. Also, please add music, I beg of you. Don't get me wrong, I see a lot of potential in this game; it feels very much like Vampire Survivors.