there's no reason to lower the score because the game doesnt end like you would have liked to... i mean... he doesnt end up with a princess, should i really give it a 1/5? y'know
it's nicely done for a basic game.
the trail effect of the comet is pretty nice.
the black holes should have a little more detail than a black blotch and instead of just changing the planet when you reach a new "level", you should randomize the planets you pick... just for variety's sake and give you the "level" you're on just to help you keep track of your score. another thing, the specials (like shield and speed) should have a timer bar or something... cause the boost stopped me right on a black hole and i died... which was pretty unpleasant. Also, as a side note, you have potential... try something bigger next time... like... that involves animations, more than 1 button, menus, interaction... y'know. Good luck on your next submissions.
Platinum medals (challenges) and Platinum trophies (Rewards & Distance). Good luck !