Well, shit, I don't think you can say it doesn't look exciting. That trailer was great... I hope the actual mode is as intense as they made it out to be.. It could be an instant favorite and keep people playing for years.
Out of everything the game has to offer, it would be MP modes like this that would keep me playing the most, and make me feel that good old 'Aliens' feel.
Despite everything, I'm pumped to give this game a shot. I really want it to be good.