Story: Normal and Funny, don't interfere in the game's quality for bad or good. 6/10.
Gameplay: You do need to memorize enemies that lurks while camera pan. I know this is annoying, but nothing against it is possible. The rest is like any title of the series. 5/10.
Controls: I prefer play on dualshock, better than calibrate Move all the time and it's less tiring when you play for a long time. Buttons are well maped, response is fast, np. 7/10.
Graphics: Good, but in this kind of game more is needed to shine. You really wanna see the blood come out from the zombies stylish? It's not that way here. 5/10.
Sound: Soundtrack is bad, but surprisingly it matches so well the ambients and adds a lot to gameplay. Effects are not so clear, a little bit messy and confusing when there are many enemies. 7/10.
Wow Factor: Fun for the first time you play the story. When you discover how long director cut mode is, man...this sux a lot !! 3/10.
Replay Value: Some, cause kil zombies with a friend is fun, even if you finished all the game. 4/10.
Rent Or Buy This Game? It's a nice story with bad execution. If you wanna trophies that worth you can buy, cause

and

require practice and time not available on a simple weekend. If you just wanna play cause you like kill zombies, Rent.
Overall: Fine for 10h and finish main story or maybe Director's cut once. Math says 5,28, but i think it deserves 4/10.