Sanctuary (Ludra) — Dungeon Guide

A complete breakdown of the Sanctuary dungeon: raid composition, group splitting, mechanics for all 4 bosses — from the prologue to the final dragon.

Dungeon Overview

Sanctuary is an 8-player dungeon designed for characters with a minimum Gear Score of 2700. The main reward is orange guns, and the grand prize is the gold and orange bracelets.

The dungeon consists of 4 stages:

1. Core (Fusion Reactor) Prologue boss

2. Rahu — Isolation Specialist First main boss

3. Ketu — Abyssal Wings Most difficult boss

4. Ludra — Eternal Final boss

⚠️ Attention: This dungeon has a unique raid split into 2 groups mechanic! Each party must kill their own boss (Rahu and Ketu). Decide on the composition in advance!

Group for Rahu

Easier to kill with melee classes
A cleric with resurrection is desirable, but not mandatory

Group for Ketu

Almost impossible without a cleric with resurrection
It is highly desirable to have a ranger for the spirit phase

Prologue Boss: The Core (Fusion Reactor)

A prologue boss that grants access to the main part of the dungeon.

Main Attacks

Circular AoE — periodic area attack

X-Shaped Attack — cross-shaped strike across the entire arena

Constant Mob Spawns — must be controlled

Additional Reactors

Additional reactors periodically appear: left, right, and central. They grant a shield to the main core, reducing incoming damage.

Use the air platforms to reach the reactor
Destroy the additional reactor — 1-2 players are enough
After destroying it, return to the main core

Boss 1: Rahu — Isolation Specialist (Isolation Specialist Rahu)

The first full-fledged boss. Mechanics revolve around debuff transfer, safe zones, and team coordination.

Mechanic 1 — Clock (debuff transfer)

A player receives a growing circle (timer) and takes constant damage.

When the timer ends — the debuff is transferred to a player inside the circle
If no one is inside — a dangerous purple ground pool appears
The pool deals heavy DoT damage and reduces maneuvering space

⚠️ Warning: 3 pools on the field = wipe! The boss enrages and kills everyone.

Mechanic 2 — Safe Cone

The boss performs an attack that covers almost the entire arena, leaving only a narrow safe sector.

A linear attack (clock hand) appears on one player
That player must lead the line away from the safe zone
Then quickly return to the safe sector

Mechanic 3 — Wheel of Torment

Players are teleported, after which waves of arena-wide strikes begin.

⚠️ Warning: You must be in a safe zone next to one of the characters. If the group fails — raid wipe.

Mechanic 4 — Arena Split (~50% HP)

The boss divides the arena into 4 quadrants.

The group must quickly choose a safe square
Move there together
Crossing the lines deals massive damage!

Mechanic 5 — Add Phase (~25% HP)

Circles with mobs appear. The boss fires a linear attack in the direction of one party member (an eye will glow on them).

Use the boss's linear attack to kill the mobs: Abyssal Predator (Abyssal Predator) in the circles
If a mob survives — an additional pool appears
3 pools = wipe!

Boss 2: Ketu — Abyssal Wings Ketu

Extremely difficult boss mechanics-wise. Uses lasers, walls, eyes, and orbs.

Mechanic 1 — Laser Walls

Energy walls appear, moving towards the center.

Along with them — many spirits (Evil Spirit).

⚠️ Warning: If a wall passes through a spirit — it will explode, the party will take damage and a debuff!

Do not touch the walls
Dodge the laser beams (once per phase)
Destroy all spirits before the wall passes through them
Dodge the falling shards (apply fear + damage)
After the walls disappear — gather in the center

⚠️ Important: There will be heavy constant damage in the center, a Healer is mandatory here, and they must heal constantly to survive this.

💡 Tip: A Ranger is extremely useful here — can quickly shoot down spirits from range.

Mechanic 2 — Orbs

Orbs fall from the sky.

Jump and destroy the orb
If not destroyed — a massive explosion occurs

Mechanic 3 — Eye Mechanic

Eyes of two types appear:

🔴

Red Eye

You must LOOK at it

🔵

Blue Eye

You must TURN AWAY

⚠️ Warning: Incorrect reaction deals massive damage!

Mechanic 4 — Soul Stones — THE MOST DIFFICULT

After certain patterns, a Soul Stone (green crystal) appears. The mechanic consists of 3 parts:

Part 1 — Red Zones

Massive AoE with knockdown on each character. Destroys the green crystals.

Part 2 — Breaking Crystals

A broken crystal grants protection for literally 2 seconds. You need to break 2 crystals in a row!

Part 3 — "Wind"

The boss unleashes a frenzied DoT damage across the entire map. You can survive only with the crystal's protection!

💡 Tip: Classic strategy:
• 3 players gather in one spot (everyone except the healer) to preserve the maximum number of crystals
• The Healer uses an invulnerability skill during the red zone phase, then survives the wind thanks to the crystals
• After the wind, the 3-eye mechanic often follows — be careful!
• The Healer resurrects the party, and the boss is finished off

Boss 4: Eternal Ludra

The final boss of Sanctuary is a huge dragon. Many mechanics require quick reaction and coordination.

Positioning

⚠️ Warning: Do not stand in front of the head or near the tail! The best spot for DPS is on the sides of the boss.

Mechanic 1 — Orbs

Orbs of two colors appear:

🔵

Blue Orbs

Destroy with a jump

🔴

Red Orb

Explode with invulnerability or the tank's block

Mechanic 2 — Burning Circles

The boss destroys the outer circle of the arena.

The boss destroys the inner circle.

For the first part — stay close to the boss
For the second part (usually at ~75% HP) — be at the edge of the safe circle to have time to run out

Mechanic 3 — Tile Puzzle

A grid of squares appears on the field. An attack from above is prepared under each character.

Your task is to open squares with attacks and find the safe zone
Start the search from the center of the arena
After finding it — everyone gathers in the safe cube

💡 Tip: After this phase, the boss enters a stagger — the best moment for maximum damage! You can run out as soon as the huge energy orb appears.

Mechanic 4 — Slash Lines

Slash lines appear on the field.

First: damage only along the line — do not stand on it

Then: the line becomes safe — stand on it, damage is everywhere except the line

💡 Tip: If you can't stand on the line in time (e.g., due to ping), do it in advance and take the line rupture damage — it's less than the massive area attack.

Mechanic 5 — Tethers

Blue and Red flames are applied to players:

Blue — move to one side
Red — move to the opposite side

⚠️ Warning: If characters with different colors are near each other — a tether forms, dealing DoT damage to both!

Mechanic 6 — Colored Platforms

Blue and red platforms appear on the arena. Before the boss's powerful attack:

Each player must find a platform of their own color
Only one player can stand on a platform
Step onto the platform 1 second before the attack! NOT EARLIER!

💡 Tip: The platform grants a protective buff that allows you to survive the attack. After receiving the buff, it's not necessary to stay on the platform — immediately attack the boss.