Pretty fun I game. I enjoyed it
I do have to say, its really hard. I didn't spend much time on this game, but I couldn't get basically anywhere. The moving enemies always move together with you, which makes it almost impossible to hit them, and not take damage. My energy is drained very quickly. Though I probably would have got better with time.
The upgrade/score mechanic sounded nice, though I have no idea how to access the repair station. But it sounded nice still.
I didn't really like that you could only shoot using the arrow keys. It doesn't give me enough precision. I much prefer shooting with my mouse which is way more precise. Other than that, its a neat game!