Summary: This game is a lot better if you play with a friend. I played the campaign with the AI as my partner and it was annoying at times. There were some pretty fun battles but it got a little repetitive and I started to get frustrated constantly having to tell my partner what to do. I also didnt like some of the games mocking remarks about the military. Weapon customization was good but could have been deeper. More of a rental game.
Summary: I got the game when it first was launched. The campaign is extremely short and the online was extremely laggy. The game had mediocre graphics and not the best controls. But, it was fun playing a single player game with 2 main characters. In combat it was very useful having a teammate at your side that actually had good A.I. It was fun while it lasted, overall the game is just average though.
Conclusion: A game that must never play alone. The A.I of the computer controled friend is a joke: he'll just stand still and do nothing while he gets shot, he'll drag you right into a gang of enemys when you're taken down and overall the buddy is about as smart as a dead rabbit. But play the game online and its a whole different story. It's worth a rent but only if you're online.