Commander Niall

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Commander Niall is an optional boss encountered in Castle Sol in the Mountaintops of the Giants. He is found after progressing through the castle to the Church of the Eclipse and entering the green fog gate near the summit. Defeating him allows players to continue onward and reach the Castle Sol Rooftop Site of Grace. [Steam Guides 3067080786,3229740103,3296700279]

Boss fight video

ELDEN RING BOSS GUIDES: How To Easily Kill Commander Niall! — Tyrannicon · 4:02 · via YouTube

Getting there

⭐ Nearest grace: Castle Sol Rooftop · open map

Location: Castle Sol Loot: - Veteran's Prosthesis - Rune x90,000 [community map data]

Drops

Haligtree Medallion Half [Steam Guide 3067080786]
Veteran's Prosthesis [eldenring_fanapis]

Located in

Castle Sol — Boss tied to one secret medallion half location [Steam Guide 2771317236]
Mountaintops of the Giants [eldenring_fanapis]

Unlocks

Commander Niall — Defeated Commander Niall [Steam Guide 2785187510]

Sources

Steam Guide 2771317236
Steam Guide 2785187510
Steam Guide 3067080786
eldenring_fanapis
Image: eldenring fanapis

⟶ Explore next

Commander Niall Defeating Commander Niall unlocks this achievement; check the recognition tied to the battle. Veteran's Prosthesis Commander Niall drops this item, so see the reward connected to his defeat. Mountaintops of the Giants Commander Niall is located in the Mountaintops of the Giants; explore the region around him.