This level shouldn't be too much trouble. Follow the instructions until you reach the door with a bunch of walkers inside. Open it up and run for the door on the left. Don't try to fight them because it's impossible and you will die. You don't have much time to look around and you don't need to. Make it to the end and press
on the door.
You should pick up a pistol now. Run outside and kill the walker on the other side of the fence. Press
to go down into the hole and then pick up the shovel. Dig until you reach the other side of the fence. Use your gun to kill any walkers that get in the way. I created a video below if you would rather just watch that. I pick up all the comic books also.