Love 'em or hate 'em, Avatars are here to stay. If you have to pick a very Nintendo-like animated persona, you may as well customize it, making it your very own. Avatar Awards are one of the cooler ways to do this; earning certain achievements unlocks clothes and accessories for your 'toon self. 'Splosion Man did it first, and it looks like Left 4 Dead 2 is the next game to feature Avatar Awards.
A few zealous folks over at the Steam forums found some interesting code which reveals the goodies and how to earn them.
Med Kit: Earned by beating all five campaigns.
Bull Shifters Shirt: earned by winning 10 games of Versus.
A Left 4 Dead 2 shirt: Earned by winning 10 games of Scavenge.
Zombie Hand Shirt: Earned by killing 10,000 Infected.
Depeche Mode Shirt: Earned by rescuing Gnome Chompski from the Dark Carnival.
And my personal favorite...
Frying Pan: Earned by killing 10,000 Infected.
I can't wait to have these. My trademark zombie killin' phrase will be "Talk to the pan, 'cause the face ain't listenin'!"