Neat stuff! I liked the laser targeting switching to the closest side. Once you get to 50% the game does get a bit frustrating; with the body so large, there's very little you can do against asteroids flying a mile a minute. I'd suggest increasing the slow on the laser or lowering the max asteroid speed; it's really demoralizing being almost done and getting blasted back to the stone age by an asteroid you had no chance of dealing with. Otherwise, it's well crafted and very clean in the visuals department, with no other distractions or bugs to speak of. Good work!