Weapon Proficiency/Armor Break

Armor Break is a proficiency skill for 1H clubs in Sword Art Online: Integral Factor. It has a chance to activate a debuff on the enemy which decreases his Defense for 10 seconds when the player has a mace equipped. Upgrading this skill increases the Defense reduction.

The table below shows the level of the mastery skill, how much the Defense is increased, prerequisites to level it up, and the materials required to level up the mastery skill.