Cool game, I liked it!
The background is nice to look at and the gameplay loop is fun, although a bit too easy. The events are a very cool idea.
I have to say, I felt strange moving around and shooting with the ship. Although the camera size is the same, and thus when you move you see new things and lose sight of old ones at the same rate, the fact that the player is not centered in the screen gave me the feeling of not really seeing where I was going. Perhaps, if it was centered (or if the camera anticipated your movement) it could give a better feeling.
Also, the top left angle of the map has kinda broken textures lol