User blog comment:Forgotten Madness/Do YOU Think Zombies such as the Necrosis, Wicker and Devastator (Both SAS 3 & 4) were Human/@comment-24567736-20141018151120/@comment-25713367-20141020114218

Then that must be a lot of mutations (Shamblers, Stalker, Spitters, Um what else? Bosses, The different resistances etc)