Very Nice!
Except for the ads. They were a bit overboard. The music was a little repetitive, and you might want to thing about improving the arms that hold the gun!^^
Also, maybe a few more levels; although this game was quite addicting, it was very short, and I was really dissapointed in its length. I liked how it got increasingly harder as you progressed, and I was like, 'WOOT' when I got the new gun, because right at that moment I was thinking about how much better this game would have been if you were able to get new guns!
This was an awesome game, and I would really look foreward to another release (if revamped) of this game!
VERY GOOD JOB!