Do you even test these games before submitting?
Seriously, this game is buggy. Stan2e3 pointed out a few issues already, but I had a big problem with the blocks. Most of the time they fall on the little guy and create cover for him that's nearly impossible to break through (especially with the limited amount of ammo you're given). In other games, those blocks would smush the little guy. Not so here. Same goes with the stone you throw at them. Even if it rolls into them pretty fast, they mostly bounce off (both the little guy and the blocks), and nothing happens. I made it up until level 9 where you have to kill 11 guys, but you only get 3 stones and got too annoyed to continue.
A little more effort into quality control and you'd have a decent enough Angry Birds copy. As it stands, this is pretty poor.