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Wednesday, March 25, 2026

Last Epoch Corruption System Explained - Seasons 1-3

This is a brief summary of how to push your corruption once you get to the end end game in Last Epoch. To get to the starting point you must beat the campaign, as well as go through the entire monolith system once before you can start with corruption. 

NOTE: THIS SYSTEM MAY CHANGE IN SEASON 4, STAY TUNED!

Credit: lastepoch.com

In your corrupted monolith, complete echoes in one direction away from the center until you see a Shade of Orobyss (it will look like a dark crystal mountain on the echo).

On your way there, build up Stability by completing echos and killing the timeline boss. Each timeline boss kill grants 1 Gaze of Orobyss. Each Gaze gives 12 bonus corruption when you kill the shade, and you can consume up to 4 Gaze at a time.

The total corruption goes up by # of gaze (ideally 12x) + base corruption on the Shade of Orobyss echo map (shown on the bottom right of monolith UI). 

Ideally you want to get to 25+ corruption in a single run, which is what is required for continuing the Forgotten Knights Faction quests. 

Most likely you will kill 3 corrupted timeline bosses before you kill Shade of Orobyss.

Once you have +25 corruption in your current timeline then you should move to the next timeline. 

Complete 1 echo in the new timeline and a "free" pity Shade of Orobyss fight connects to your completed echo. Kill it to jump up ~90% of the max corruption. If you did consume 3x gazes, you should immediately bump up +30-40 corruption simply by doing the catch-up shade in the new timeline. 

Eventually you gain stability tokens to make spawning the timeline boss quicker and gaze idols that give you additional gaze credit. You still have to grind out echoes to the edge of each timeline to find the Orobyss for the timelines though so don't waste these tokens until you find the Orobyss.

Repeat all of the above steps until you are at +300 corruption and all Harbingers are dead. This will eventually unlock higher levels of corruption for each timeline and the ability to fight Aberoth/Uber Aberoth.

You can track your progress in the 2nd tab of the Forgotten Knights panel.

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