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How to Unlock Horizontal Quad Slash Sword Skill | Echoes of Aincrad (SAO EoA)

How to Unlock Horizontal Quad Slash Sword Skill | Echoes of Aincrad (SAO EoA)

Last Updated: July 21, 2026 at 1:39 PM
Table of Contents

Horizontal Quad Slash Basic Information

Horizontal Quad Slash
Weapon TypeSword icon
Sword
SP Cost90Cooldown60
DescriptionExecute four horizontal Sword Strikes dealing:
• 100 (+150% of ATK) damage on the first strike
• 100 (+150% of ATK) damage on the second strike
• 100 (+150% of ATK) damage on the third strike
• 100 (+200% of ATK) damage on the fourth strike

Here is the basic information for the Horizontal Quad Slash, showing its weapon type, SP Cost and Cooldown, description, and how to unlock it.

How to Unlock Horizontal Quad Slash Sword Skill

sword skill levelling.jpg

Sword Skills, although being named as such, can be for different weapon types such as the rapier, dagger, and so on. Except for the defaults, you can unlock Sword Skills by simply increasing your weapon proficiency.

Horizontal Quad Slash is unlocked by Sword Proficiency Lv. 10.

How to Increase Weapon Proficiency

Upon completion of the side quest, “Thrill of the Unknown,” you can increase your proficiency. You can then reallocate your Sword Skill points using your chest at the inn.

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