Endwalker content

Eureka Orthos (Floors 1-10)

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See also: Eureka Orthos

Deep Dungeon.png

Eureka Orthos (Floors 1-10)

EO 1-10 Banner.png
Level
81 (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 1-10) is a level 81 deep dungeon introduced in patch 6.35 with Endwalker.

Enemies

Floors 1-40 Guide by Joonbob
Enemies
Enemy Level Aggro Type Known Floors Notes
Orthos Imp 81 Sight 1-2
Orthoiron Claw 81 Proximity 1-3
Orthos Dahak 83 Sight 1-4
Orthos Grenade 83 Sight 3-5 Late telegraph: Big Burst - Point blank circle
Orthos Demon 83 Sight 4-5
Orthos Behemoth 84 Sight 5-7
Orthos Water Sprite 84 Proximity 6-7
Orthos Bhoot 84 Sound 6-9
Undead Orthos Dragon 85 Sight 8-9
Orthos Thanatos 85 Sound 8-9
Mimic 85 Proximity 7-9 Bronze Chests
Patrolling Enemies
Enemy Level Aggro Type Known Floors Notes
Orthos Succubus 82 Sight 1-3
Orthos Vassago 83 Sight 4-6
Orthos Fachan 85 Sight 7-9 Dread Gaze - inflicts paralysis
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 01-10 guide

Floor 10 Boss

Aggressive difficulty r6.png Gancanagh

Gancanagh's arena is a 3x3 grid, with each square containing a Pachypodium mine.

Authoritative Shriek: Gancanagh activates a random set of mines, which will then cast Mandrashock. Mandrashock is a telegraphed point-blank circle AoE that deals damage and Vulnerability Up if it hits.

Mandrastorm: Proximity AoE on Gancanagh, get away.

Rotation

  • Authoritative Shriek
  • Authoritative Shriek
  • Mandrastorm
  • Mines activate in rows/columns marked with 1, 2 and 3 dots, and explode in that order. The middle set is always the first set to explode; stand at set 3 and move to set 1 after it explodes