Yeah, I don't have a whole ton to say about this one; my main motivation for beating it was that I had about 800 hours logged into the online mode, but only had about 200 achievement points in it.  The original 1000 points are all single-player based, and the remaining 250 or so were added with the online-only expansion, and it was just bugging me for years.  Long story short is that the story mode is fucking awful, online mode is still good fun for me and my friends.  At least the story mode was short.  Kinda.
 
1 out of 5 stars (story mode ONLY score)
 
(beaten at level 60, about 20 hours)