Left 4 Dead "The Sacrifice" cinematic trailer is full of zombies, desperation, more zombies

The new Left 4 Dead "The Sacrifice" trailer presents a classic match-up of brains versus brawn. And overwhelming numbers. And speed. And mobility. And every other conceivable disadvantage one small group of weak, scared, tired humans could have against a never-ending, never-faltering brain-hungry horde.

Our guess? Everyone's gonna be perfectly fine, of course! How else would something called "The Sacrifice" end?