I like that a lot, especially that you don't use spaceships and asteroids. Music is good, controls with Gamepad is very good. The only suggestion i would have is that the player could wrap around in the playfield but the enemies not. So you could get rid of your pursuers.
Thank you! That could work if the screen would not scroll. Hmm, something to test definitely.
And one last thing, if you use the arrow keys + space for controls some keyboards can have ghosting with that key combinations.
This is a good point. I'll fix this.