Endwalker content

Eureka Orthos (Floors 91-100)

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See also: Eureka Orthos

Deep Dungeon.png

Eureka Orthos (Floors 91-100)

EO 91-100 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 Rage Extinguished
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 91-100) is a level 90 deep dungeon introduced in patch 6.35 with Endwalker.

Floors 71-99 Guide by Joonbob

Enemies

Enemies
Enemy Level Aggro Type Known Floors Notes
Orthos Mining Drone 90 Sound 1-3
Orthosystem α 90 Proximity 1-3
Orthodrone 90 Proximity 1-8
Orthos Motherbit 90 Proximity 3-5
Orthos Zaghnal 90 Sight 3-5
Orthos Sphinx 90 Sight 4-6
Orthos Mithridates 90 Sight 5-7
Orthos Durga 90 Proximity 6-8
Orthos Fitter 90 Sight 6-8
Orthonaught 90 Sight 6-8
Mimic 90 Proximity 1-8 Gold Chests
Patrolling Enemies
Enemy Level Aggro Type Known Floors Notes
Orthosystem γ 90 Proximity 1-4
Servomechanical Orthotaur 90 Sight 3-8
Servomechanical Orthochimera 90 Sight 5-8
Dread Beasts
Enemy Level Aggro Type Known Floors Notes
Demi-Cochma 90 Sight 1-9 Grants 30m Vulnerability Down buff (10%) upon defeat
Lamia Queen 90 Sight 1-9 Grants 30m Rehabilitation buff upon defeat
Meracydian Clone 90 Sight 1-9 Grants 30m Damage Up buff (10%) upon defeat

External Links

Deep Dungeon Compendium Floor 91-100 guide

Floor 99 Boss

Unlike prior deep dungeons, this final set of floors contains a boss at the end.

Aggressive difficulty r6.png Excalibur