Sunder

Attack
Actions: 1

You can attempt to sunder an item held or worn by your opponent. If your attack is successful, you deal damage to the item normally. Damage that exceeds the object’s Damage Reduction is subtracted from its Integrity. If an object has equal to or less than half of its total integrity remaining, it gains the Broken condition. If the damage you deal would reduce the object to less than 0 integrity, you can choose to Destroy it. If you do not choose to destroy it, the object is left with only 1 integrity and the Broken condition.

When sundering armour, only the outermost layer gains the broken condition.

If an item is magical, add +2 to its DR and +10 to its integrity for for each rarity category (see Magic Item DR and Integrity).

The integrity value given is for armour and shields sized for a medium creature. Divide this number by 2 for each size category of the item smaller than Medium, or multiply it by 2 for each size category larger than Medium.

Common Armour, Shield & Weapon DR & Integrity

Weapon or Shield DR Integrity
Leather/Hide Armour 5 Armour DR×5
Iron/Steel Armour 10 Armour DR×5
Steel Buckler 10 5
Medium Wooden Shield 5 7
Medium Steel Shield 10 10
Heavy Wooden Shield 5 15
Heavy Steel Shield 10 20
Wooden Tower Shield 5 20
Light Blade 10 2
One-Handed Blade 10 5
Two-Handed Blade 10 10
Light Wooden-Hafted Weapon 5 2
One-Handed Wooden-Hafted Weapon 5 5
Two-Handed Wooden-Hafted Weapon 5 10
Light Metal-Hafted Weapon 10 10
One-Handed Metal-Hafted Weapon 10 20
Projectile Weapon 5 5

Substance DR and Integrity

Substance DR Integrity
Leather or Hide 2 5/inch of thickness
Wood 5 10/inch of thickness
Iron or steel 10 30/inch of thickness
Mithril 15 30/inch of thickness
Adamantine 20 40/inch of thickness

Magic Item DR and Integrity

Magic Item Rarity DR Integrity
Common +2 +10
Uncommon +4 +20
Rare +6 +30
Very Rare +8 +40
Legendary +10 +50
Artifact +12 +60