Critical Gamer Writes: Now that the Left 4 Dead 2 demo is open to everyone, it's time to share our thoughts on Valve's latest zombie splatterer. The demo only offers a brief glimpse at what we can expect come November 18th and the release of the full game, but it's enough to whet our appetites. The demo showcases the four new survivors and some of the new weapons available, as well as the special infected we'll come up against.