Planet Xbox 360 writes: "If you don't grasp the appeal of cutting through the bloodied maws of zombie hordes (I pity you), Left 4 Dead 2 will do little to sway your misguided opinion of the macabre sub-genre. Despite some much-appreciated additions, this is very much the same FPS in a new city, not that I'm complaining by any measure. Four (lucky?) survivors must slog through the infected citizens congesting five scenarios. If you're looking for a story, that's about as deep as it gets. L4D2 is a pure action experience rooted in arcade-style replayability, and the difficulty that implies. Valve's A.I. system, The Director, observes and adapts to every action. It doles out only enough medical supplies to keep you breathing, drops weaponry and ammo in changing locations, and replenishes the torrential waves of minions with tenacious brutality. The Director is the backbone of L4D2 that ensures your tenth experience is just as intense as the first. "