With the near release of the upcoming L4D sequel, Left 4 Dead 2, special features dealing with the Xbox Live concepts are starting to take shape. Valve confirmed today that there will be a list of special awards to use on your gamer avatar on Xbox Live that are to be earned from completing various tasks in-game. Some of these items are crazy, ranging from a med kit to a garden gnome, and others are things like T-shirts. A detailed list of the items and how to get them was provided by Valve (Woot!):

Avatar Awards
Med Kit - Unlock the Med Kit by beating all five campaigns on any skill level.
Frying Pan - Unlock the Frying Pan by killing 10,000 Infected.
Garden Gnome - Unlock the Garden Gnome by rescuing Gnome Chompski.
Bull Shifters Shirt - Unlock the Bull Shifters shirt by winning 10 games of Versus.
Left 4 Dead 2 Shirt - Unlock the Left 4 Dead 2 shirt by winning 10 games of Scavenge.
Zombie Hand Shirt - Unlock the Zombie Hand shirt by killing 10,000 Infected.
Depeche Mode Shirt - Unlock the Depeche Mode shirt by rescuing Gnome Chompski.

Good luck and happy gaming!
Left 4 Dead 2 is planned to release November 20, 2009. It got pushed back from the previous November 17, 2009. Rated M for mature.