On this page of the Assassin's Creed Valhalla Siege of Paris guide, you will find a detailed walkthrough of The Rot in the Slums main story quest.
Reward: 5,100 XP.
Find and speak to Sigfred
Sigfred is waiting for you in Paris, right next to the synchronization point. You can track him using the raven. The man is in the undergrounds. You will reach them without any problem - just follow the marker on the map.
There are rats in the undergrounds. This is a new mechanic that was added to the game with the Siege of Paris DLC. Rats cannot be killed. You have to drive them to sewer cages (try to block these places with something so that the rats won't come out again). You can chase away rats with melee weapons, torches, or exploding arrows.
Walk with Sigfred
After finding Sigfred, you will head to the village. There you will meet Odo. Together with Sigfred, you will determine what to do next. The man will take care of the guards. You must kill Bishop Engelwin. You can do this in two ways:
- Track the man down and kill him yourself;
- Look for clues, e.g. by asking citizens.
You can start looking for clues at the tavern. There you will meet a woman who will be happy to talk to you. She will point the next two clues:
- the drunk,
- soldiers at the table.
Go to both of these points (marked in blue) to get more clues.
The drunkard will tell you that the soldiers took his daughter because they suspected her of stealing.
If you approach the soldiers, you will be able to easily read the secret letter (just don't attack them and nothing will happen). The document contains information about a secret word that will allow anyone to enter the church.
Let's move on. After checking out the tavern, you must head to the Plague district. You can find this area by using the raven. Here, you will come across a man who will direct you to a nun. The woman will show you the way to the sewers.
There is a boat in the canals that you can use to get around this location. However, if you feel like it, you can just swim. At some point, you will see blue dots - dive. There are a lot of bodies underwater that you need to examine. Eventually, you will arrive at the secret word enabling you to enter the church - Job 1:21.
The second option is to follow the drunkard's daughter. She won't tell you about the secret password. Instead, she will direct you to the key she sold to the bandits.
How you get to church is up to you. The important thing is that once you are there, you will need to assassinate the target.
Start by finding the Bellatores Robe. Its description can be found on a separate page of this guide.
Put the robe on so you can enter the undergrounds. There, take out the torches and light the two marked points - this will get you further in.
At the bottom, you will come across the Bishop. As long as you are wearing the robes, no one will attack you. You can kill the target in several ways:
- Interact with him directly;
- Shoot her with a bow;
- Eliminate quietly.
Whichever option you chose, the next step is to leave the church. This will complete the task.