I can't get enough. Somehow more needs to be added. Additional modes? Seasons with or without stats? Online Multiplayer? Co-Op Season? All of it! Replays, definitely -- maybe a way to save them offline, too.
I'm pretty sure the main character is simply reliving his childhood. "Yes, I remember now when I hit myself in the right arm with a bat it hurt more than when hitting my left arm. I wonder if all zombies have the same reaction as me... Not that I'm a zombie. I'm not...right? Why am I carrying all this meat around if I'm mainly beating my subjects? Man, I'm hungry. This zombie on zombie crime has to stop!"