Yoel of Londor & Yuria of Londor Questline
This questline is crucial for unlocking the Usurpation of Fire ending. Find Yoel of Londor near the Foot of the High Wall bonfire in the Undead Settlement. Recruit him to Firelink Shrine. He offers to 'draw out your true strength' (grant free levels) up to five times. Each time you accept, you gain a free level and increase your Hollowing. It is vital to accept all five of these free levels from Yoel before defeating the Abyss Watchers. If you defeat the Abyss Watchers before receiving all five levels, Yoel will die, and Yuria will not appear.
After Yoel's death, Yuria of Londor will appear in his place at Firelink Shrine. She is a key figure in the Usurpation of Fire ending and will offer guidance and items related to this path. To progress her questline, you must have accepted all five free levels from Yoel. Yuria will then offer you the Dark Sigil, which is essential for the ending. She will also provide you with the Londor Pale Shade summon s for certain boss fights, should you choose to follow her path. Continuing to speak with Yuria and fulfilling her requests, such as marrying her to the Lord of Hollows, is paramount to achieving the Usurpation of Fire ending. Failing to meet her requirements or progressing too far down other ending paths can lock you out of this specific outcome.
The questline involves a series of interactions and specific actions. For instance, if you cure your Hollowing with a Purging Stone before Yuria appears or before you have obtained the necessary Dark Sigils, you may inadvertently break her questline. The number of Dark Sigils you possess is directly tied to your Hollowing level and is a prerequisite for certain dialogue options and the ultimate ending. The questline culminates in a significant choice that determines the fate of the First Flame and the player's character.