Essentially, it goes like this.
Your some guy called Alex (methinks). You're a little... Different. You're not like the other kids. Essentially, because something changed you. I guess you were part of some biological weaponry experiment? Who knows? Not you, cos you have amnesia. Damn.
Anyways, you decide you wanna know what happened. So you set off to do just that. Thing is, its kept under wraps, and you aren't. You gotta fight the police, the army, the Black Ops, and other... Experiments. Looks absolutely badass.
I'm surprised nobody noticed it before. I've been following it for a while now.