Seems Flawed
I Believe it has potential, but I the fact you can't shoot while turning your turret while the enemy is always barraging you (although its accuracy isn't the best) is kind of a big screw up imo
2 for Graphics because they seem a bit to basic
5 for style cause its a new twist on an old classic although i'm pretty sure i've played something like this
1 for sound because you can turn it off!
0 for violence cause... thats a given :P
2 for Interactivity... because of what i brought up earlier with the turning and shooting
0 for humor is a given as well
Overall 4
Keep at it! its got potential.
I think you've got quite a few kinks to work out thats all