Needs Lots of Work.
You desperately need:
Sounds: Background music, laser sounds, space shit sounds, thrust sounds, shooting sounds, etc.
Organization: this game really has no organization whatsoever, since you never die there is really no point to it, not only that the Graphic interface is completely messed up, it needs some serious artwork.
Originality: This has been done before soo many times, and way better as well. Add some originality to this type of game too, have different modes in which you can battle opponents, and also have different stages to avoid redundancy.
On other things it is very very redundant, and I think I have to explain myself much on this one, other than the fact that well the enemies are the same and everything is just more of the same.
Work on all these and yull probably have something going.