Burning the Firebrand is a quest under Jorvik in Assassin’s Creed Valhalla.
Your task is to find out who the Firebrand is and eliminate the person.
Here’s a walkthrough of Burning The Firebrand in AC Valhalla.
Suggested power: 190
Search Jorvik’s archives
Head to the archives. The location is shown below, marked by the quest symbol. It’s southwest of the Royal Hall.
You can enter the archives from the front door.
Inside, examine all of the clues. You’ll then stumble upon Audun and Abbes Ingeborg.
Before you leave, there’s a book of knowledge at the archives. You’ll see a ladder near the front door.
Climb up and get the book. You’ll unlock the Rage of Helheim ability upgrade.
Explore the rectory
Next, head to the rectory. The location is shown in the map below, marked by the quest symbol.
You can enter from the front.
Inside, use Odin’s sight. You will see two houses that are barred.
You don’t have to enter those, as those are probably skippable. Just head towards the bishop’s quarters which is the much larger building on the right.
Move the shelf at the front door to enter the quarters.
Investigate the bishop’s quarters
Examine all the clues inside the quarters.
The final clue is at the chair.
Move the body away first and you’ll see a charred letter on the chair. Read it.
After examining the clues, guards will arrive.
Leave the building and head to the Minster.
Infiltrate the Minster
The location of the Minster is shown below, marked by the quest symbol.
You can probably enter from the front door, but there are plenty of guards there.
An alternative is to enter from the top of the building.
If you enter from the top, you can later assassinate The Firebrand from the top.
Kill the Firebrand
After the cutscene identifying who the person is (Abbes Ingeborg), kill her.
If you had entered from above, you can assassinate her from the top.
Return to Ljufvina
Get back to Ljufvina at the Royal Hall.
Talk to her to complete the quest.