10. Eat Food (Even if it's on the Ground)
Eating food to heal isn't new, but in games like Dead Island and Dead Rising you can pick up food off the ground or in the garbage to get a few bars of life. The food can be rotting and you'll still gain health by eating it.
Food choices aren't always logical. It's a zombie game thing, you wouldn't understand. But eating dirty food is better than eating brains, no?