Hard to say, it's some kind of GTA-Clone, but with a whole different storyline. You're a head hunter. And you want to become the Nr1 Head Hunter in the City Santa Destroy. Therefore you run around and kill the other Head Hunters. But you do jobs and so on, too, but none of them will be like in Hitman. A lot more Hack and Slay. How ever, it's VERY cartoonish, there is a lot of cartoonish gore as you can see in the trailers (cutting people in half ).
So it will be probably be M-Rated or something, nothing about this yet.