Too hard, too fast
At first I thought 'Yehaw! Mass shooting action! This is gonna be good!'
However, it got too hard WAY too quickly. Also, why do al your power ups disappear when you start a new level? On a related note, I don't even remember changing levels (thats assuming the sudden change in background is a 'change' in level).
Could have been so much more, but truned out to be so little
A darn shame