Very enjoyable, but feels quite light.
The story can be a little cliche, falling on the revenge department of the kid revenging parents slaughter. It works for what you get, but story wasn't the motivator to keep pushing forward. there are a few different characters and parallel story line that you'll get to enjoy, but it's pretty much all the same, doesn't add too much to the experience and the gameplay it's practically the same for every character.
The aiming is quite loose, you'll pretty much get to hit your enemies if your cross arrow is anywhere around them. Head shots will do the job quickly and there's a feature where you slow down time and can set some of the shots to be performed when the slowmo ends.
With unlockable weapons and extras the game develops pretty well, and it's a great distraction and preparation for Red Dead Redemption. If in a bargain bin, snap it out and go undust your original xbox.