User blog comment:Chaoswolf75/Request/@comment-1155385-20091002181425

Hell,you need to be a smart player even to use the Screamer.One wrong move with any class can end in fail.

Having one of each infected (You cna view all of them and their function on the wikia itself) on an Infected team full of smart players will make you unbeatable,but remember,unlike in L4D 1 & 2,if you fail,you ARE truly fucked,unles your in Single-player and have spent ages collecting money for Health Upgrades,but 2000 health means nothing if you get ambushed.