IMHO It's not that great. Won't be spending $45 on it. I'd maybe pay $15, I paid $25 for gmod and CSS and still love those. This decent, but if I buy games that are $30+, I would like some sort of story, not jsut a multiplayer based game that is solid repetition. (That's what I bought CSS for, and it was only $15.)
In conclusion, I'll watch you guys play, if my brother get's it, possibly might play his once a year, but, meh.