Rochelle Is Left For Dead Simple but great :D
The zombies in the background might be simple but that really adds to the effect since they blend in with the background, though I don't really like that you can see the pen-strokes such as on the silo-thing and on the log the zombie in the back is holding.
The character in the front looks all great exept that the left arm (from my point of view) look kind of wierd