Pierce Resistance or Piercing Resistance is a Primary Resistance in Titan Quest. It reduces the damage taken from Pierce attacks, i.e., attacks with Swords, Spears, Bows, Bolt Traps, Blade Traps and others.
Difficulty Penalty[]
Being a primary resistance, Pierce Resistance is affected by the resistance penalty the player gets in later difficulties: It is reduced by -40% in Epic and by -100% in Legendary.