In Minecraft, along with health, armor is also incorperated. This also goes for Zombiecraft! After you buy Juggernog for 2500 points, you will recieve a full bar of 10 shields. Depending on what difficulty you are on, you armor could become damaged more easily by zombies. The armor you have equipped (Chainmail) will wear away as more zombies hit you, while also absorbing most of the damage that would of subtracted from your health. This can become very useful in tight situations where you have no time to regenerate your health. Once you become harmed enough, the armor will wither away and become destroyed, resulting with a empty armor bar and you will take full damage again. You will have to buy Juggernog again in order to get this capability back!