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Durability is now a factor in equipment and is inherent to wearing armor, using shields, and using weapons against anything whatsoever. The following rules govern the loss of durability.

Every durability point counts as a separate health bar of [durability*10] on the weapon. For instance, a shield with 35 durability will have 35 bars of 350 health each.

Whenever two objects with durability come into contact with one another, a durability check is made. A durability check is the measure of one weapon’s hardness versus another’s. It’s like swinging a 2x4 at a rod of carbon steel. This augments the damage one can deal to the other in this way [durability of attacker/durability of defender] For instance, let’s say a sword with 20 durability comes into contact with a shield with 40 durability. 20/40 equals 50%, so this sword is only capable of dealing 50% damage to this shield. An important note: only maximum durability is used in this equation. No amount of damage done to the weapon or shield will change this number.

Now; how does an item lose durability, you may be asking. In much the way that you think it would. Every time that sword would be swung at the shield, 50% of the damage the sword would have dealt that attack is dealt toward the shields’ health. That much is easy. The slightly more in-depth part is that if the sword strikes the shield in that round, and does not take a full bar of the shield’s durability, the sword itself will lose one bar of durability for striking an object that is harder and did not give to the force of its attacks. Armor is handled in exactly the same manner.

So if Red is swinging his 20 durability sword at Blue’s 40 durability shield and would have normally dealt 700 damage, Red’s sword can only deal 50% damage to Blue’s shield, and as such only 350 damage was dealt to the shield. Red’s sword is reduced to 19 durability, and Blue’s shield remains at 40 durability with only 50 points of damage left until his shield loses a point of durability.

In the special case of two weapons striking each other (parrying) the total damage of the attack of each opponent is added together before any durability modifications, and is then applied to each weapon with the modifications.

If Red and Blue are both attacking with a sword, and Blue has made a successful parry check (an attack that met or beat the DC of Red’s attack) Red’s 20 durability sword and Blue’s 40 durability sword collide. Red would have dealt 100 damage with this attack, and Blue would have dealt 150 damage with his own attack. Those attacks added together mean that 250 damage is up in the air. Because Red’s maximum durability is half Blue’s maximum durability, Red’s sword takes 500 damage, and Blue’s sword takes 125 damage, meaning Red loses 2 points of durability and has 100 points until he loses the next, and Blue loses no points of durability and still has 375 points until he loses a point of durability.

When using hand-to-hand attacks to strike a shield or armor, durability of your attack is calculated according to your str mod.
When using a ki technique to strike a shield or armor, your ki mod is the durability of the technique.
There is no damage dealt back to the user for punching or ki blasting a shield, it is merely for damage augmentation purposes (However a weapon will still take damage for failing to meet the cost of one full ‘bar’ of durability if striking a ki wall or parrying a fist. If a weapon is used to parry a fist, durability damage is calculated as per normal, and the damage is done to the fist’s owner.)