When you successfully hurt something or are hurt by something, subtract the listed HP from yourself or the target, as relevant:

• Minor damage: 1 (bumps, cuts, bruises)
• Standard damage: 1d6 (an attack with a weapon)
• Serious damage: 2d6 (incapacitation or maiming)
• Deadly damage: 3d6 (death)
• Catastrophic damage: 4d6 (capable of destroying a house)

Worn armor reduces physical damage taken by HP equal to its weight. If armor reduces the damage taken to zero it should become dented, cracked, damaged, or destroyed.