Well I've just completed the campaign and I agree with Eric Gunnerson - it's a bit of an anti-climax at the end. You just finish a level (with obligatory level boss) and you get a quick cut scene and the credits. Do let the credits run as there is a bit more video at the end though.

The game is excellent but I'm left wondering if wasn't easier than the previous version. It only took a week this time instead of two or three. Hopefully the live games can prolong the interest.