You we're a survivor, wandering through an nearly empty neighborhood Though there are Zombies, you take them out swiftly and efficiently with your metal bat You then find an Barricaded House and as you approach it... ... A man shouts-

"Stop! Turn around slowly!"

You did what he told you to do You notice he was armed with an fireaxe and an M9 Beretta

"You infected? Or you one of them crazy folks going around killing people."