Armor

Armor is a mostly obscured stat from the player. It applies a damage reduction on damage taken if you have it, and a damage increase if you have a negative amount. This applies to all damage taken, except the damage from a Shrine of Blood.

If you have positive armor, your damage taken is multiplied by 1-armor/(armor+100). This is a number between 0 and 1.

If you have negative armor, your damage taken is multiplied by 2-100/(100-armor). Note that the negative armor is subtracted, and two negatives make a positive. At the current armor gain of the Rose Buckler, at +30 armour per stack, it would take 330 to get a damage reduction of 99% while sprinting. This would amount to 9900 armor.

Sources of Armor

 * MUL-T's utility skill "Transport Mode" grants him 200 armor while it's active..
 * Clay Dunestrider's recovery attack, during which they will pull in all nearby characters, grants the Dunestrider 200 armor while active.
 * The Rose Buckler grants armor while sprinting.
 * MUL-T and Mercenary are the only two survivors to have an initial 20 base armor.
 * The Effigy of Grief removes 20 armor from all characters in its radius while placed down.
 * Enemies in the Boss Category have base armor and perhaps level armor. See their individual pages.
 * Playing on Drizzle grants each player a hidden item which grants 70 armor.