Endwalker content

Eureka Orthos (Floors 21-30)

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See also: Eureka Orthos

Deep Dungeon.png

Eureka Orthos (Floors 21-30)

EO 21-20 Banner.png
Level
90 (Sync: 90)
Difficulty
Normal
Party size
Flexible
1-4 man 1-4 Any class frame icon.png
Unsyncing
Not Allowed
Time limit
60 minutes
Req. quest
Feature quest Delve into Myth
Entrance
Mor Dhona (X:34.8, Y:19.2)
Patch
6.35

In the late Third Astral Era, when the ancient Allagan Empire was at the zenith of its glory, researchers toiled deep under the Crystal Tower to uncover secrets which might uplift their motherland to even greater heights. Their laboratory was dubbed Eureka Orthos, where impossible concepts of immortality, cloning, and dominion over the divine were made reality. So fantastic was this research that the legend of Eureka has endured through the ages, and now you have been tasked by the archmagus Noah to bring the laboratory's buried secrets into the light of day.

— In-game description

Eureka Orthos (Floors 21-30) is a level 90 deep dungeon introduced in patch 6.35 with Endwalker.

Floors 1-40 Guide by Joonbob

Enemies

Enemies
Enemy Level Aggro Type Known Floors Notes
Orthodemolisher 90 Proximity 21-22
Orthos Wyvern 90 Sight 21-23
Orthos Brobinyak 90 Sight 21-24
Orthoknight 90 Sight 23-25 Late telegraph: Electromagnetism -> Headspin - Large draw in AOE followed immediately with point blank AOE
Orthodroid 90 Sight 24-25
Orthoblue Dragon 90 Sight 25-27
Orthos Biast 90 Sight 26-27
Orthos Vouivre 90 Sight 26-29 Out of Combat: AOE inflicts stacks of Vulnerability Up
Orthokaliya 90 Sight 28-29
Orthoshelled Dragon 90 Sight 28-29
Mimic 90 Proximity 21-29 Brown Chests
Patrolling Enemies
Enemy Level Aggro Type Known Floors Notes
Orthogiant 90 Sight 21-23
Lesser Orthos Dragon 90 Sight 24-26 Late telegraph: Swinge - Massive front cone
Orthos Vanara 90 Sight 27-29
Dread Beasts
Enemy Level Aggro Type Known Floors Notes
Demi-Cochma 90 Sight 21-29 Grants 30m Vulnerability Down buff (10%) upon defeat
Lamia Queen 90 Sight 21-29 Grants 30m Rehabilitation buff upon defeat
Meracydian Clone 90 Sight 21-29 Grants 30m Damage Up buff (10%) upon defeat

External Links

Deep Dungeon Compendium Floor 21-30 guide

Floor 30 Boss

Aggressive difficulty r6.png Twilight Test Subject: Tiamat's Clone

Tiamat Clone's arena is a large square, the boss always stays behind the north edge. All abilities inflict Vulnerability Up. If an add makes contact with a player, it deals damage and also inflicts Vulnerability Up.

Creature of Darkness: Tiamat Clone summons adds at the front of the arena that move to the back, there are two open spaces.

Dark Wyrmtail: Late telegraphed line AoE down the middle of the arena. Spawns adds in the centre of the arena that move to the left and right edges, alternating directions.

Dark Wyrmwing: 2 late telegraphed line AoEs on the left and right edges of the arena. Spawns adds on each edge that move to the opposite edge.

Dark Megaflare: 4 sets of telegraphed AoE puddles covering the entire arena with random safe spots. Some puddles spawn adds that move toward random players.

Whei Morn: Chasing puddle AoE targeting 1 player. The initial hit is telegraphed, with 4 subsequent hits chasing the target. Each hit spawns an add that moves toward a random player.

Rotation

  • Beginning of fight
    • Creature of Darkness
    • Dark Wyrmtail OR Dark Wyrmwing
    • Dark Megaflare
    • Whei Morn
    • Dark Wyrmwing OR Dark Wyrmtail
  • Repeating
    • Creature of Darkness
    • Dark Wyrmtail OR Dark Wyrmwing
    • Whei Morn
    • Dark Wyrmwing OR Dark Wyrmtail
    • Dark Megaflare
    • Dark Megaflare
    • Dark Wyrmtail OR Dark Wyrmwing

Dialogue

Mechanical Voice: Intruder detected. Initiating countermeasures. Commencing emergency deployment of proto-Dalamud.
Tiamat's Clone: Commencing memory fabrication... Thou standest before Tiamat, guardian of Meracydia.
Tiamat's Clone: Go forth, my children! Drive these foul invaders from our home!
The darkness coalesces!
Tiamat's Clone: Bear witness to the power of the first brood!
Tiamat's Clone: The flames of retribution consume thee!
The darkness coalesces!