Achievements

Left 4 Dead includes achievements for Steamworks and Xbox LIVE. There are 51 achievements for the game. The OUTBREAK achievement is not in the Xbox 360 version of the game.

Trivia

 * Zombie Genocidest is a reference to the the Zombie Genocider achievement for the Xbox 360 game Dead Rising, where the player has to kill 53,594 zombies in the time limit given.