Unique Skills

Unique Skills are weapons skills in the game Sword Art Online, which the trait that are limited to a single player. The prerequisites for receiving this skills are unknown, but they are given to the most skilled players. Because Unique Skills are extremely rare, only two players were known have this skill: Heathcliff with Holy Sword; and Kirito with Dual Blades.

List of Unique Skills

 * Dual Blades
 * Holy Sword
 * Darkness Blade*
 * Battoujutsu*
 * Shurikenjutsu*
 * Infinite Spear*

* These Unique Skills were supposed to be unlocked after reaching the 90th floor.