How to complete the Diallos quest in Elden Ring

The Elden Ring Diallos quest is available pretty early on in the Lands Between. His questline starts properly once you reach Liurnia of the Lakes, but you'll meet him for the first time once you've unlocked access to Roundtable Hold. Diallos's story arc ties in with the Jar-Bairn quest as well as Volcano Manor so you'll need to progress some way into the game if you want to see the quest through to its conclusion.

There are many Elden Ring quests to complete, and it's easy to lose track of those you've met and spoken to. An early patch introduced new icons to help keep track of the NPC locations, but you still might get stuck wondering where you're supposed to go next. Without further ado, here's how to complete the Elden Ring Diallos quest.

Elden Ring Diallos quest summary 

Here's a brief summary of the steps you'll take during Diallos's questline:

• Speak to Diallos at Roundtable Hold and he'll tell you about Lanya.
• Find and speak to Diallos in Liurnia, close to the Academy Gate Town.
• Return to Roundtable Hold and speak to him at his original location.
• Head to Volcano Manor and find Diallos in the same room as Bernahl. Exhaust his dialogue.
• Keep checking in with Diallos every time you complete a step at Volcano Manor.
• Once you start the second main assassination, Diallos will leave the manor.
• Head to Liurnia and find Diallos at Jarburg (you need to work through the Jar Bairn quest a little way to get him to show up).
• Talk to both Diallos and Jar Bairn until they have no new dialogue.
• Rest and move time forward by at least one whole night.
• Speak to Diallos again to complete his quest.

Liurnia of the Lakes

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Elden Ring Diallos location: Where to find this NPC 

After you initially meet Diallos in Roundtable Hold, you can find him again once you reach the Liurnia of the Lakes area. Fast travel to the Academy Gate Town Site of Grace to the southeast of Raya Lucaria Academy and you can find him almost directly north, standing on one of the rooftops. His exact location is shown in the screenshot above.

Speak to him and exhaust his dialogue, then return to Roundtable Hold to find him in his original location. Speak to him again and he'll mention getting an invitation, as well as the location of the manor.

Volcano Manor

Find Diallos at Volcano Manor 

Note: You won't be able to complete the Diallos quest if you defeat Rykard at Mt Gelmir early. Doing so causes everyone to leave Volcano Manor. 

Now you should continue exploring the Lands Between until you reach Mt. Gelmir and access Volcano Manor. You'll need to join the Recusants to access the room where Diallos resides.

Once Tannith hands over the Drawing Room Key, use it to access the room down the corridor on your left. It's the same room where you find the Volcano Manor letters on the table and Bernahl is sitting close by. Diallos can be found leaning against a wall, so talk to him and exhaust his dialogue.

To continue the quest further, you should progress through the Volcano Manor questline. Return to Diallos and speak to him whenever you complete a contract, and he will eventually leave. 

Jarburg

Where to find Jarburg 

The final step of Diallos's quest takes you to Jarburg in Liurnia of the Lakes. You can get to this area by fast traveling to the Gate Town Bridge Site of Grace, then head east to the cliff just south of the Carian Study Hall. The exact location is detailed in our Elden Ring Jar-Bairn quest guide.

Now you need to speak to Jar-Bairn to progress their quest. You'll be asked if you're the new Potentate, so reply that you are. Exhaust the dialogue then reload the area—either fast travel away or rest at a Site of Grace. Speak to Jar-Bairn again and they'll mention Diallos has arrived.

Look for Diallos inside one of the huts and talk to him, once again exhausting his dialogue. Reload the area and speak to both Diallos and Jar-Bairn until they say something new, then pass time at the nearby Site of Grace so a whole night has passed.

You can now find Diallos in the centre of Jarburg. Select "You defended them" when prompted, speak to Jar Bairn again, then reload the area once more. Talk to Jar Bairn for the last time, then after a final reload, you can loot Hoslow's Petal Whip, Diallos' Mask, and a Numen's Rune.

Elden Ring guide: Conquer the Lands Between
Elden Ring bosses: How to beat them
Elden Ring map fragments: Reveal the world
Elden Ring weapons: Arm yourself
Elden Ring armor: The best sets