Today, Valve released the entire 1000 Gamerscore list of Left 4 Dead achievements, because they know there are obsessive achievement fanboys who need to be informed. The list of achievements (viewable after the jump) is a nice blend of individual, cooperative and even a few zombie based achievements. You know, ones that'll have you attempting to "cover four Survivors with Boomer bile at once" to unlock "Barf Bagged." Note too that a good portion of the Gamerscore is allocated to protecting and saving your Survivor companions. So, no team killing. Okay?