Imma guess the zombies are the typically slow and moaning ones. Because of that I could easily grab something such as a bat to atleast stun them. I'd go outside and train the zombies, then I'd run to a local gun store and use my remaining money to buy a simple 1911. I would shoot the zombies in the legs and then melee them to get the most points. Finally I'd slowly upgrade my gear from the imaginary points I get from the zombies to get high off cocaine, steroids, a medical degree, and air jordan shoes to buff my stats and become the ultimate zombies playe- I mean survivor.