I played the demo that was out until the full version was released. I can't drop 50 bucks for it at this point (or 40 for that matter), but I'd like to get it when it eventually drops. If you play Team Fortress 2 I'll fire up a game with you. My steam ID is nate_el_buen0. That's a zero at the end because it's my second account. Just don't make fun of my hours played. During my period of unemployment, I've been getting into the 60 hours in the last 2 weeks range.
As far as the game though, I had a lot of fun with it. It's just annoying when you get grabbed by those guys and your buddies can't save you since they're all tied up.