The story is heart-felt and amazing, as well as all new enemies and weapons, you'll never let you're controller down.
I completed the campaign with my brother and have yet to try it solo, but i must say it is probably more fun co-op if anything.
The story also is immersive. There are points in the story were you feel anger and have no remorse, and other times you feel sympathetic and you feel as your heart just sank through the ground. That's what this game does to you, you grow on the characters. You feel horrible when someone dies like it was your own friend. When a game does that to you, that is when they have succeeded.
I gave this game a 9.5 and not a 10 because the online multiplayer falls rather short.. You wait longer to fight than the actual fight itself. But it still is rather enjoyable.
This is a MUST BUY people, what are you waiting for? The Gears need your help to finish the fight so get your $60 and get this game ASAP