Brutal Legend: 8.5
Hilarious game with a really creative setting. I enjoyed the hybrid hack-n-slash/RTS gameplay though it seems to be a "love it or hate it" mechanic. It does take a while to get used to, especially since you need to develop your own strategies over time. My only complaint is that it's just begging for more game content. There are really only a few secondary missions that were worthwhile (the racing and hunting missions), the rest are generally the same thing over and over (ambush, mortar, and shooting gallery) though they're fun the first couple of times you play them.
It took me about 10 hours to beat the single player campaign, which isn't too bad considering it has a multiplayer mode but I want MOAR!!! The setting, backstory, and gameworld are too detailed for the single player campaign to be finished that early (and I took my time, I think most people finish the game in 7-8 hours). I did read they're coming out with DLC, but I hope it's not just multiplayer maps. I would totally pay $20 for an expansion that added 3-5 to the single player campaign with more varied secondary missions and more items in the motor forge.