Even the strongest of shields cannot defend the weakest of wills. A moment's hesitation beckons a lifetime of pain!
Crush Armor is used by The Thunder God in The Orbonne Monastery. It is an attack that tethers to a player; the tether can be intercepted by another player. It deals damage to the tethered player and inflicts them with Physical Vulnerability Up, making it impossible to be hit twice by this attack and survive. After one player is damaged, another must grab the tether. Each cast of Crush Armor inflicts damage four times. Tanks must not be damaged with Crush Armor, since they will most likely die to The Thunder God's physical auto-attacks.
Armor won't help the heart stay sharp... Shellbust Stab!
—Activation quote (PSX)
Crush Armor is an ability learned by the Divine Knight, Rune Knight, and Sword Saint classes for 200 JP. It destroys the target's equipped armor and inflicts non-elemental damage to them with a range of 3, but in the PSX version did no damage to monsters.