I like the idea of this, however i don't think it will play out how you think it will. You can't use cars, you can't sprint unless that's one of the zombie types you prefer. The survivors will be much faster and more cunning than you, they will be armed or carry weapons. Just think how many zombies you ended up killing before that one lucky bastard managed to sneak up on you at the right moment. So it could end up being a very long drawn out game of cat and mouse filled with frustration when you finally see a survivor and he jumps into a car and drives off, or wraps a baseball bat around your head because you weren't quick enough. That said, I still like the idea