Have 4-3 players, when you open the door in the back near the electricity 1-2 players go into the hole that leads into the cave.

While in there make sure you have Bouncing Betty's.

Next you must watch the window in the cave - DON'T WORRY ABOUT THE STAIRS THE ZOMBIES WONT COME FOR YOU, THEY WILL COME FOR THE PLAYERS ON THE CATWALK.

The person with monkeys is the person who should be in the cave.

2 or 3 players go up the stairs to the catwalk all the way to the back and camp there.

1 other helpful tip is to save a crawler each round to go to the pack a punch.