This was fun. You definitely got that stressful dogfight feel from both the soundtrack and the waves of enemies, and the pixel art fitted the mood well.
I do think the controls were a little unintuitive. I could move side-to-side with the mouse, but only until the mouse went of the screen, which was annoying. I also felt it was odd that the mouse didn't also do up-and-down, but maybe that's just me!