Undoing What’s Been Done is a side quest in Torment of Hades in Assassin’s Creed Odyssey.
Your task is to look for Phoibe and defeat the Cyclop’s guards along the way.
Here’s a walkthrough of Undoing What’s Been Done in AC Odyssey.
This quest is recommended for level 60 and above, but it differs according to your own level.
As Phoibe went missing from the previous mission, you have to find her.
Get to the location shown in the map below, marked as the quest symbol.
Kill the escaped souls
Before you can find her, you probably have to defeat the escaped souls first. This part is tricky.
There are two Rifts here, and you can only access one at a time. This means you can only kill half of the souls at a time.
All of them will attack you of course, but you can only hit some of them. Once you’ve dealt with half of the souls, go to the other Rift and switch Rifts.
This allows you to kill the other half.
After sealing each Rift, you’ll get an ability point.
Find information about Phoibe’s whereabouts
After eliminating the souls, go to the higher platform and look for clues.
There’s one clue here.
After interacting with it, two guards will appear. Kill both of them.
Loot the body to get information on the whereabouts.
Go to the Ancient Temenos
Phoibe was apparently taken to the Temenos. The exact location is shown in the map below.
It’s sort of a cave.
Inside, you should use your torch to find the way. You’ll probably see two paths. One is through this narrow gap.
Ignore the path through the gap which is a dead end.
The right path is through the side and you’ll reach some water. Get to the other side and climb onto the platform.
Keep going and you’ll then encounter some escaped souls. To kill them, enter the Rift.
Eliminate all of the escaped souls to seal the Rift.
Once they’re dead, continue looking for Phoibe.
You will see some guards this time. Kill all of them.
Keep going until you see this crack on the wall. Go through it.
You will then come across yet another group of escaped souls. Once again, use the Rift and kill the men.
After killing the souls, keep going ahead using the walkway.
You will then reach more stone platforms to jump through.
Keep going and you’ll see this orb. Destroy the orb using your arrows.
The guards will be alerted when you destroy the orb.
Eliminate the guards
There are even more guards here. Kill all of them.
Talk to the prisoner
After eliminating the guards, look for the prisoner. Go to the wall at the end with a crack where you can slip through.
A cutscene will load once you reach that wall.
During the cutscene, the prisoner will tell you about Phoibe being taken away and Charon may help you.
Talk to Charon
Get out of the cave and talk to Charon. His exact location is shown below.
During the conversation, I chose “The Cyclops is toying with me”, and he helped ferry Alexios.
The quest completes here. You’ll get a Kephallonian Dagger.