I like it.
Well,you made a very challenging game from a very simple graphics & gameplay.
I liked the style of this game,and it's not too hard,it's only difficult XD
Anyway,i got as maximum score 10.
I would suggest,if you haven't done it yet,to add some changes to the "enemies",trough the game.I mean,after some time the blue ball gets bigger,the red changes direction,some other enemy substitute or reinforces the other two...