It's so fast paced, frenetic and I DON'T like it. I'm sorry to go against the grain but it's really not for me. The map in the beta feels too claustrophobic and the textures are pretty poor. I'm not really a big shooter fan, but I think Call of Duty provides more the experience that I like.
I can see why everyone will love it, it's not a bad game at all and I'm sure it'll sell very well but for me, I'd rather sit back with a good story and a slower pace. Life is fast and frantic enough lol.
What I would say from a negative point of view is that I just don't see any longevity in this game, maybe I'm wrong. Sorry to be down on it, but like I say, I'm sure mega-shooter fans will love it.