Armor is an essential stat in Shakes and Fidget which determines the percentage of damage reduction of attacks inflicted by your opponent. It is calculated by dividing your current level into the amount of armor you have at the moment.
Armor is one of the most important attributes for a warrior as they can achieve the most damage reduction from the three classes in the game. Maximum reduction is 50% and it applies to attacks from warriors and scouts. Mage attacks ignore damage reduction.
Scouts have a maximum of 25% damage reduction and again it applies to scouts and warriors. Damage from mages is not affected.
Mages have the least damage reduction - 10%. However this compensates with greater damage output.