This is a decent game. The storyline is nothing spectacular, so it's more enjoyable if you just want to play a decent shooter. Personally I enjoy the co-op feature of this, as everything is more enjoyable when played with a friend. Occasionally it can get really challenging and frustrating, but that's not a bad thing. The customization features for weapons and masks is interesting, but not overally so. Worth a buy for a co-op game.