I just discovered this game and played the demo. My first actual successful (well, not really) playthrough went like this:
I was out looking for food, because I was running low. I found a bar, with a bunch of alcohol in it, and decided to loot the place. There was tons of whiskey on the shelves, so it took longer than I anticipated to loot it all. Before I knew it, night had come. I started to see zombies shuffling around in the streets, so I barricaded both the doors and pulled out my shotgun.
I waited for hours of in-game time, just waiting for the barricades to break. I could hear hordes of zombies banging on both of the doors. As soon as one of the barricades broke, all hell broke loose. Hundreds of zombies came through the door, and my shotgun couldn't kill them all before they got to me. I pulled out my baseball bat, and knocked a path through the horde. Finally making it out of the bar, I hightailed it back to my safehouse. Checking my wounds, I realized that I was bitten. Death was inevitable now.
However, little did I know that I was followed. I went upstairs to my injured wife's room to get some sleep and food, and make sure she was safe. Suddenly, I heard the door downstairs break. I quickly shut the door and barricaded it, waiting. After a while, they showed up at the door and began clawing their way through. After they got through that, I started going berserk with my shotgun. Blood flew everywhere and coated the walls of the room. I eventually ran out of shells, and still they kept coming. I had to protect my wife, so I took out my baseball bat and leaped into the horde. I fought valiantly, killing dozens of zombies before eventually being ripped apart.
Just thought I'd share my story of Project Zomboid
I'm definitely buying this as soon as possible.