AION 2 Sanctuary 4 Plains of Lament: The 75% Tactic Explained

Sanctuary 4 — the Plains of Lament — is the newest Sanctuary dungeon on the Korean and Taiwanese servers, and the first guide-focused community coverage is already circulating for it. Global players will face this same content after the October 5 launch, so we are tracking it now: version-tagged KR, single-community-source level, and worth knowing before you queue.

Footage from the KR-server guide video (community source, 2026-09-21).

Quick answer

Quick answer: Sanctuary 4 (Plains of Lament) is a KR/TW server dungeon whose make-or-break moment is a 75% boss pattern: melee DPS break the ice, ranged DPS break the iron, tanks hold the fan-shaped pull, and everyone settles at 6 o'clock while 9/12/3 o'clock sectors extend. The wipe floor can be eaten with Hibernation and cleared with Deca — a single Deca ends the wipe mechanic if the shield hits land.

What the 75% pattern actually is

The community guide singles out one mechanic above all others: the 75% intensity pattern. A rough map from the source coverage:

• Split responsibilities — melee DPS break the ice; ranged DPS break the iron. One warm-up/fan sequence ("the warmth shouldn't hit the fan shape twice") gates the break.
• Positioning — tanks who pulled the fan-shaped pattern return to their posts, everyone else duels at 6 o'clock, and the 9 / 12 / 3 o'clock sectors extend outward to eat the follow-up.
• The second warmth burst — after the first break, the warmth detonates again; players who have already died on the flute/pipe mechanic simply stay down rather than res into it.
• Counterplay skills — a red-floor attack (magic-damage component) can be absorbed with the Hibernation skill; using a single Deca cleans up the wipe mechanic as long as the shield hits land. The source's framing: "rather than selling items, one Deca ends the wipe."

Why this matters for Global players now

Three honest reasons this is worth a preview article rather than a wait-for-launch page:

1. The content is real, not rumor — Sanctuary 4 is live on KR/TW, and the tactic video is a playthrough, not a leak. It is community single-source, so we label it as such and do not dress it up as official.
2. Same dungeon, later date — Global launches October 5 and will face the same Plains of Lament. Players who already main Ranger or Sorcerer can pre-learn the ranged role (iron break) from KR footage.
3. It feeds the version comparison discipline — KR-sourced tactics are labeled KR on this page and never presented as Global fact; the same trap we flag in competitors.

What we are not doing: building a standalone Sanctuary dungeon page yet. One community tactic video is not enough for a full dungeon page under our thin-page rule — this news preview is the right-size first layer, and a full dungeon guide lands after Advanced Access/live Global testing with named mechanics verified.

FAQ

Is Sanctuary 4 available in the Global version? Not at the October 5 launch — it is currently a KR/TW server dungeon. Global players should expect it in a post-launch content wave (timing to be verified).

Is the 75% tactic confirmed by NC? No — it is single-community-source KR coverage, auto-translated, and names are approximate. We will re-verify in the Global build before it becomes a guide, not before.

Which classes take which role in the pattern? Per the source: melee DPS handle the ice break, ranged DPS the iron break, tanks hold the fan pull. Exact class matchups are (to be verified) in Global.