I couldn't force myself making it to the first hyperjump... missing sound is something that destroys so much fun for me :(
The graphics were really nice, tough some added little things could have made a big difference (parallax background, bullet impact, little thrusters for turning).
I really missed a feeling of impact for destroying the asteroids, it's the main thing to do and it should feel more "powerful"... a little explosion, sound effect, impact of the laser etc.
Try BFXR for sounds :)