Raiden Shogun was introduced as a new weekly boss fight in Genshin Impact 2.5. While the character has been a staple of the game since Inazuma was introduced, she can now be farmed every week similar to the other bosses.
The battle is located in the End of the Oneiric Euthymia Domain, which can only be accessed after the player has completed the related quests.
- Imperatrix Umbrosa, Chapter I: Reflections on Death
- Archon Quest Until Act III: Omnipresence Over Mortals
- Imperatrix Umbrosa Chapter II: Transient Dreams
To play Chapters of Imperatrix Umbrosa, the player will need some Story Keys. Story Keys are earned by completing Daily Commissions, with one key earned for every 8 Commissions completed.
Imperatrix Umbrosa Chapter II: Transient Dreams revolves around some reports of Rifthound activity that players will need to investigate. Head to Grand NArukami Shrine where you will meet Ei. Follow the trail of Rifthounds and take them down when you find them. You will need to use Ei to do this. Get used to this, as you’ll need to follow the story until you finally have to fight the Raiden Shogun with Ei.
Once that’s all done, a weekly boss fight will take place and players can farm it for the Mudra of the Malefic General, Tears of the Calamitous God and The Meaning of Aeons. Just like the other boss battles, you’ll need 30 Original Plastic Beads to get the reward from this fight if it’s one of your first three weekly boss battles or 60 Original Plastic Beads after.
https://www.gamepur.com/guides/how-to-unlock-the-weekly-boss-fight-with-raiden-shogun-in-genshin-impact How to unlock weekly boss battles with Raiden Shogun in Genshin Impact