The story is well developed (obvious, but who cares, the narration is good for once). The zones are varied (close and complex, both rich than open). The feeling of freedom (two) is good, especially with the link between the protagonists. The gameplay is good for the Wii, nice and fast enough.
The only flaws, the camera is far from perfect (but adjustable. Well, almost), and the fun is really present only two. If you have a (an) other player (player) with you, buy it.