Endgame questline

Legacy of the Precursors

Raise the Precursor Fortress, open the Burning Monolith, defeat the Arbiter of Ash, assemble the Origin Core, and defeat the Arbiter of Divinity.

How it works

Begin by completing a map and a Precursor Tower, then activate its beacon to raise the Precursor Fortress. Clear the Ancient Gateway and both Enigma Chamber routes to obtain the Crisis Fragments needed for the Burning Monolith and the Arbiter of Ash. Continue into the Origin Tower, defeat Phyx and Phya for the Origin Spark and Origin Cradle, combine them into the Origin Core, and carry it to the tower apex to fight the Arbiter of Divinity.

Primary structure: Precursor Fortress
Pinnacle bosses: Arbiter of Ash and Arbiter of Divinity
Progression reward: Main Atlas passive points

Raise and enter the Precursor Fortress

The opening objectives establish the Atlas, expose the Fortress, and unlock its internal gateway network.

Complete an Atlas map

Take a Waystone from Doryani, use the Map Device, and complete the selected map.

Complete a Precursor Tower

Travel to the revealed Precursor Tower, complete its map, and activate the Precursor Beacon.

Open the Ancient Gateway

Explore the gateway, use its four levers, reach the central platform, and activate the next beacon.

Reach the Burning Monolith

Continue through the Fortress until the Burning Monolith and its sealed passage are accessible.

Open the Burning Monolith

The western and eastern Fortress routes provide the fragments that open the first pinnacle encounter.

Western Gateway

Clear the lever sequence, defeat the Precursor Separator, enter the Western Enigma Chamber, and defeat Count Geonor.

Eastern Gateway

Clear the lever sequence, defeat the Precursor Refiner, enter the Eastern Enigma Chamber, and defeat Doryani.

Collect the Crisis Fragments

Take the Ancient and Weathered Crisis Fragments from the Enigma routes and return to the Burning Monolith.

Defeat the Arbiter of Ash

Use the required Crisis Fragments at the sealed passage, enter the arena, and defeat the Arbiter of Ash.

Complete the Origin Tower

The second half of the questline assembles the Origin Core and opens the final Fortress pinnacle encounter.

Obtain the Origin Spark

Explore Patriarch Halls, defeat Phyx, Sentinel of the Spark, and take the Origin Spark.

Obtain the Origin Cradle

Explore Matriarch Halls, defeat Phya, Sentinel of the Cradle, and take the Origin Cradle.

Assemble the Origin Core

Place both components in the Precursor Reactor inside the Origin Tower, activate it, and collect the Origin Core.

Defeat the Arbiter of Divinity

Carry the Origin Core to the top of the Origin Tower and use it to begin the Arbiter of Divinity encounter.

Guides using this page

AtlasHow to Start Mapping and Sustain Waystones

Open the first Atlas map, choose safe Waystone modifiers, use Tablets in the current Map Device interface, sustain higher tiers, and reach the Precursor Fortress.

Connected reference pages

QuestlinePrecursor Towers

Complete the first Precursor Tower near the Ziggurat Refuge, activate its Precursor Beacon, then speak to Doryani to finish the quest and receive an Irradiated Tablet.

Continue with the exact quest, item, area, or tool.

The Burning Monolith

The first Fortress pinnacle area and the door opened with Crisis Fragments.

The Origin Tower

Combine the Origin Spark and Origin Cradle, then ascend to the final encounter.

The Arbiter of Ash

The first pinnacle boss in the Fortress questline.

The Arbiter of Divinity

The final boss reached with the Origin Core.

Main Atlas tree

Inspect the passive points and connections awarded through Fortress progression.

All Atlas passive points