Chapter 1: KNOW YOUR ENVIRONMENT & stop texting
The Zombie apocalypse is a cruel world. Not only will you be trying to survive a near endless onslaught of man-eating undead fucks, but you will also be competing against other survivors and advanced B.O.W.s.
So when your out and about the undead city, always to remember you location. Sometimes, you can even use the environment to aid your survival, moving book shelves using anything you can see as a weapon. We are not in a world that is prerendered after all, so do what you can to optimize your survival.
Things to do:
-Stop texting. Actually, if your not checking the update of a fellow survivor or looking through your map and compass apps, then don't even turn the phone on. Texting works better than calling fellow survivors, but texting each second halts your progression and also leaves you open for attack.
-Check the room thoroughly. Do yourself a favor and check every nook and cranny of a room that is new to you. You may find potentially helpful items and weapons. You may also find secrets and hidden weak spots.
-Don't stay for long. It can be fine to remain in a room for a while, but don't count on it being your life savor. Remember, no ones looking for you. You have to save yourself, so leaving yourself open to being trapped is not on the to do list.