Hi jakes. First of all congratulations for your first game! I know it's not an easy task...
The game play is basic and fun! And for that's one of the most important thing's.
Now I notice some minor issues. I think you should increase the resolution of the screen a little bit.
I notice also that sometimes the "Terrible pilots " keep stuck in the middle of the far left, right, bottom, up, x or y axis. You probably want to limit their appearance only in the screen with their sprite full visible. That way is cleaner.
You can also provide somewhere the instructions of how to play. I know it seems pretty obvious but there are all kind of players and we must satisfy every one.
I think your game is a good one and can be a good one to spend some time. Try to make a mobile version of it!