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

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

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

Horizontal Arc Basic Information

Horizontal Arc
Weapon TypeSword icon
Sword
SP Cost40Cooldown25
DescriptionExecute two horizontal mid-range Sword Strikes before stepping back out of range, dealing:
• 100 (+150% of ATK) damage on the first strike
• 120 (+200% of ATK) damage on the second strike

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

How to Unlock Horizontal Arc 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 Arc is unlocked by Sword Proficiency Lv. 9.

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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