As you progress through this journey, you'll accumulate Elden Ring Runes from defeating enemies, bosses, and exploring various locations. These Runes are essential for Elden Ring Runes leveling up your character and purchasing vital Elden Ring Items needed for this questline.

In particular, you'll need Runes to purchase some of the items necessary for respecing or upgrading certain weapons, armor, and Talismans that can help with your survivability in the later stages of the game. Additionally, Runes will be crucial when engaging with NPCs like Brother Corhyn, as you may need them to purchase valuable items from him, such as Incantations and Miracles.

In short, Runes will be your primary currency throughout the entire game, and they will play a role in enabling you to meet the requirements for this ending. Keep an eye on how many Runes you have and consider farming certain areas for Runes if you're running low, especially when preparing for Elden Ring Runes buy the endgame.