Exclusive: Full List of Official Left4Dead Achievements

We'd slay zombies all day just for the heck of it, but turns out you can earn some sweet rewards for putting down the undead. Steam (and Xbox 360) achievement points, to be exact. Valve Software has hooked us up with the official full list of Left4Dead's 52 game achievements, which can be earned on both the Survivor and Infected side (in Versus mode). Among our favorites in the list? "Zombie Genocidest", which requires that we kill 53,595 common infected zombies, and "101 Cremations", which you earn by setting 101 infected on fire with the molotov cocktail. read more (link)