How to complete Thiollier's questline in Elden Ring Shadow of the Erdtree?

Thiollier's questline in Elden Ring Shadow of the Erdtree is one of the many tragic tales from the DLC. The developer, FromSoftware, is notorious for their bleak and hopeless stories, and this new Elden Ring DLC doesn’t stray from their signature. Thiollier begins as an ally of the protagonist, but thanks to the betrayals and hardships of The Land of Shadow, he turns into a husk.

In this article, we have shared a step-by-step guide to help players learn how to complete Thiollier's questline in Elden Ring Shadow of the Erdtree and uncover the divine lie that made this devotee of St Trina lose everything.

Guide for completing Thiollier's questline in Elden Ring Shadow of the Erdtree

First, you will need to find him (Image via FromSoftware || YouTube/ Its Shatter)

Where to find Thiollier

Journey to the eastern border of Gravesite Plain.
From the Three-Path Cross Site of Grace, travel northeast.
Cross Ellac Greatbridge towards Castle Ensis.
After the bridge, take the southbound road.
At the fork, veer left instead of following the gravestone path.
Proceed southeast until you reach a cliff edge.
Find Thiollier seated by a rock near Miquella's Cross and the Pillar Path Cross Site of Grace.

If you're having trouble spotting him, look for the distinctive silhouette of Miquella's Cross against the horizon.

Also Read: How to complete Dryleaf Dane questline in Elden Ring Shadow of the Erdtree

The first time when you interact with him

Engage Thiollier in conversation.
Learn about his Tarnished status and allegiance to Kindly Miquella.
Speak with him again to unlock his Merchant services.
Purchase poison-related items if desired.

His expertise in poisons isn't just a gameplay mechanic - it's a key part of his character that will become important later in your journey to complete Thiollier's questline in Elden Ring.

Go visit Moore for the Syrup

Return to Moore at Main Gate Cross near Belurat.
Obtain Black Syrup from Moore.
Deliver Black Syrup to Thiollier.
Receive Thiollier's Concoction as a reward.

Always exhaust dialogue options with characters you meet, as they often provide crucial items or information for other questlines. The Black Syrup is a great example of this.

The Great Rune-Breaking of Miquella's effect on Thiollier's questline

Approach Shadow Keep to trigger the Great Rune-breaking event.
Revisit Thiollier for new dialogue about St. Trina.

Get ready to die by drinking poison by St. Trina (Image via FromSoftware || YouTube/ Its Shatter)

The breaking of the Great Rune is a pivotal moment in the game's narrative. It not only affects the Thiollier questline but also begins a new chapter in the Elden Ring Shadow of the Erdtree DLC.

Thiollier's Relocation

Defeat the Golden Hippopotamus in Shadow Keep and go back to Thiollier.
Thiollier will mention moving south to the shore.
He'll disappear from Pillar Path Cross.

If you ever lose track of Thiollier or any other character, methodically revisit previous locations where you've encountered them.

Go to Stone Coffin Fissure for Thiollier's questline

Go south of Cerulean Coast. You will see a thin patch of land; go there.
Enter the underground area through a ground opening and enter the Stone Coffin Fissure in the Shadow of the Erdtree.
Navigate to the Site of Grace atop a statue.
Jump from the statue to initiate the Putrescent Knight boss fight.
Summon Thiollier for assistance if he relocated earlier.

Before making the leap, ensure you're well-equipped and have your preferred spells or items ready. Remember, you can only summon Thiollier here if you've progressed his questline correctly up to this point.

Garden of Deep Purple

Defeat the Putrescent Knight to access the garden.
Find St. Trina and Thiollier in this area.

This is a tragic moment in the Thiollier's questline in Elden Ring, so get ready for some poison.

Also Read: Elden Ring Shadow of the Erdtree ending explained

Drink St. Trina's Nectar for Thiollier's questline

Imbibe St. Trina's nectar four times to hear her words.
Continue drinking until she repeats her request to kill Miquella.

Repeatedly imbibing the nectar and dying will feel frustrating, but it's a deliberate design choice. Each death reveals more of St. Trina's dialogue, slowly unraveling the knot that is the story of Elden Ring Shadow of the Erdtree.

How to defeat Thiollier

St. Trina's most devoted follower (Image via FromSoftware || YouTube/ Its Shatter)

Attempt to share St. Trina's words with Thiollier twice.
Rest at the nearby Site of Grace.
Defeat Thiollier when he invades to obtain St. Trina's Smile Talisman.

His hostility stems from his deep-seated beliefs being challenged. The fight isn’t much of a challenge and he is easy to kill. It's more of a battle of ideologies than a physical clash.

Also Read: All Remembrance bosses in Elden Ring Shadow of the Erdtree

The last breaths

Return to St. Trina's room and speak with the injured Thiollier.
Share St. Trina's words with him.
Imbibe nectar once more if needed to complete the conversation.

This moment of reconciliation showcases the theme of revelation and acceptance running through Thiollier's questline in Elden Ring. The poor devotee finally accepts the truth and makes his peace and waits for his last breath.

Thiollier's questline completion

The end of Thiollier's questline in Elden Ring (Image via FromSoftware || YouTube/ Its Shatter)

If successful, gain the ability to summon Thiollier twice in Enir-Ilim.
First summon: Arena battle against Leda and allies.
Second summon: Final boss encounter.

After this, when you rest at the Gate of Divinity Site of Grace after the final boss fight, you will find the poor Thiollier lying on the ground, lifeless. Loot his corpse to find: Thiollier's Mask, Thiollier's Garb, Thiollier's Gloves, Thiollier's Trousers. You can also go back to St. Trina to get a Legendary Headgear.

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