Alright, so I actually love this type of game, and I wanted a good one to come to iOS, so that's a very good start. This game has a cool graphical style, and pretty good weapon mechanics and gravity, so that works pretty well. The reason it has two stars is because, if all tanks are created equal, the enemy will always win. Since they often have the same or better weapons than you do, they will learn how to hit you far before you learn how to hit them, and thus will always be able to take down your health before you can do the same to them, meaning it really comes down to who hits who first. It all seems really repetitive, because even the wind doesn't provide enough variation for you to need to re-aim consistently. Also, I don't know if this is intentional, but you keep spelling 'enemy' with two N's.
More will come in if I find it.