I find the game has a few problems. First, it branches off from the games in the main part of the series. You're losing the first person sniping that made the series what it is. Secondly, lately you've put out games that have little to no storyline, which really does need fixing. Finally, the recoil is kind of rediculous. I'd say have her automatically bring the gun back to the height she fired it at to fix it.
The game itself was a good one, however. It was quite enjoyable. Good cusomization and nice skill upgrade system. Playing as Shorty is an interesting twist. Definately put up a sequel with more weapons and a good storyline.
I give you a 4 out of 5. good music, good graphics, interesting gameplay and system, but not quite worthy of the series just yet.