When you hit an opponent with a piercing weapon you can twist and turn the weapon in the wound to do more damage.
Roll d100 against DR 100. You deal 2 extra damage per 10 successrate + 1d4 per ekstra Action Point you spend.
This vicious technique focuses on maximizing pain and internal damage by twisting the blade after contact. It works best against enemies with low armor or already wounded, as the extra damage can finish them off or force them to waste actions healing.