Looks good! I like the music, but there was no detectable sound effects. The controls are intuitive, but I found it nearly impossible to destroy more than a few opponents. I'm not sure if it is intended, but I found it frustrating that I am not able to fire at all unless I have a lock, which usually takes longer than the opponent is on the screen.
Though I realize this is to encourage me to match velocity with them before I can take them out, I was rarely able to match their speed and heading before they were out of detection range.