To unlock the following Avatar Awards, perform the corresponding tasks:
AVATAR AWARD - HOW TO UNLOCK Bull Shifters Shirt - Win ten games of Versus. Depeche Mode Shirt - Rescue Gnome Chompski from the Dark Carnival. Left 4 Dead 2 Shirt - Win ten games of Scavenge. Med Kit - Beat all five campaigns. Zombie Hand Shirt - Kill 10,000 Infected.