«Avalanche» (アバランシュ, Abaranshu?) is a high-level, 1-hit, Two-handed Sword category Sword Skill in Sword Art Online, New ALfheim Online and Project Alicization.


«Avalanche» is a high-hitting, charge-type skill that consists of a single downward vertical slash. Even if blocked, the defender would be temporarily stunned due to the impact, buying the attacker time to ready their stance again. As it is a two-handed Sword Skill, it cannot be deflected by just one hit from a one-handed sword.

In preparation for this skill, the user bends his lower body a little, assuming an overhead position with the sword. Once the sword is dragged a bit back, the Sword Skill is initiated.


Instance Description
Light Novel Anime Manga
Volume 1, Chapter 7 Episode 8 Kuradeel used this skill in his duel against Kirito. However, Kirito countered the skill by using Sonic Leap aimed at Kuradeel's weapon’s weak point, breaking the sword in the process due to its low durability.
Volume, 10 Chapter 4, Part 5 Uolo Levanteinn used the skill against Kirito in their spar. Kirito was able to stop the skill and launch a counterattack by using the 4-hit Sword Skill Vertical Square.
Volume 11, Chapter 5, Part 4 Raios Antinous used this Sword Skill in an attempt to kill Kirito. However, Kirito used «Whirling Current» to counter the skill and severed both of Raios' hands in the process.
Volume 14, Chapter 13, Part 5 Quinella attempted to use this skill against Kirito, but it was blocked by his «Cross Block».


Skills and Magic
Default Sword Skills
mostly common in SAO, New ALO, UW
Avalanche - Cyclone - Embracer - Explode Arrow[1] - Fell Crescent - Horizontal - Horizontal Arc - Horizontal Square - Howling Octave[2] - Lightning Fall - Linear - Meteor Break - Meteor Fall - Rage Spike - Reaver - Savage Fulcrum - Senda - Sharp Nail - Single Shot - Slant - Snake Bite - Sonic Leap - Spinning Shield - Star Splash[2] - Starburst Stream[3] - Treble Scythe - Tsumujiguruma - Tsujikaze - Vertical - Vertical Arc - Vertical Square - Vorpal Strike - Whirlwind
SAO Dual Blades - Extra Skills - Fishing - Hiding - Holy Sword - Searching - Tailoring - Tracking - Unique Skills
ALO Original Sword Skill(Mother's Rosario (OSS))
Magic Butterfly Shield - Cold resistance spell - Concealment - Earth Wall - Fireball - Fire Spear - Hit Point Buff Magic - Healing Magic - Hollow Body - Metamorphosis - Moonlight Mirror - Night Vision - Purified Surface - Sacrifice - Smokescreen - Strength Buff Magic - Vacuum Blades - Water Breathing - Wind Blades - Wind Needles
Project Alicization Sacred Arts - Incarnation - Synthesis Ritual
  1. Only in ALO.
  2. 2.0 2.1 Only in SAO and ALO
  3. Only in SAO

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