Interesting gameplay. However, estimating distances in the dark is really hard. When jumping, your character is as black as the background and it make it very difficult to go to the next plateform. I got to the level "R U confused" and gave up.
Anyway, congrats in making that game. :-)
How are you supposed to dodge some of the bosses attacks with a star ship like this? The player hit box is not clear and that's very frustrating : some bullets will hit you, and some not... Bosses have a lot of life, a life bar would be great. Bullets are so small that it's difficult to see them. And to finish, the player life bar is taking too much place on screen. Keep improving! ;-)