Game is pretty fun, graphics and sound are good. I would like it if i could see my health though or at least have an indicator when I am taking damage.
It's also a bit unclear what your supposed to do in my opinion. It took me a while to figure out that the yellow ones drop ammo and that it wasn't just random.
Ship felt pretty uncontrollable, which i think would feel a lot better if you could also move with A & D.
Lastly maybe a timer as a goal to life as long as possible so the player has a goal would be nice.
Either way, it seems to have potential!