Fear

Fear is Zombie Wrath's form of "Energy" when compared to other games. You start off with a limit of 800 fear but at the base you have 200 fear. When leveling up you can either decrease the base fear by 10% or increase the limit of fear you have by 100 (both per skill point)

There are many Items and ways to reduce fear, allowing you to do more, these things are Fruit Cocktail, Martini, Prayer Book, Pack of Cigarettes or Instant Fear Recover from the Kill House. A passive way to have fear recovery is if a Weapon or Armor you have equipped has fear recovery, for example, a gun that says "+6 Fear Recovery" Will recover an extra 6 fear points per minute.