Ulthane is capable of upgrading Fury’s weaponry and enhancements, but he can’t do it without a number of rare materials. You’ll need to scavenge the landscape for Adamantine, artifacts, and a rare ichor that only Ulthane can make use of. Though most of these materials can be purchased from Vulgrim, his prices are extravagant, not to mention Souls are better spent acquiring Attribute Points or consumables (at least early in the game).
Adamantine
Adamantine can be used to upgrade your weapons. Bring Adamantine to Ulthane to improve a weapon. This strong metal comes in various sizes, from Sliver to Chunk. As your weapons grow in strength, so too does the need for larger pieces of Adamantine.
Sliver of Adamantine: Augments a weapon up to +3. Ulthane could work wonders with metal this strong.
Fragment of Adamantine: Augments a weapon up to +6. Ulthane could work wonders with metal this strong.
Piece of Adamantine: Augments a weapon up to +9. Ulthane could work wonders with metal this strong.
Chunk of Adamantine: Augments a weapon up to +10. Ulthane could work wonders with metal this strong.
Artifacts & Essence
Artifacts are needed to upgrade enhancements, but the kind needed depends on the desired upgrade. It’s simply not possible to upgrade every enhancement along a Demonic or Angelic path simultaneously. You must pick and choose which ones to spread your artifacts across and trust that, later in the game, you’ll be able to acquire the necessary materials to create Balanced enhancements.
Angelic Artifact: Forged in the early days of the war and infused with divine energy. It radiates righteousness and can be used to augment a weapon enhancement. Ulthane should be able to make use of it.
Demonic Artifact: Cloaked in darkness, the artifact emits the faint screams of cursed souls. Can be used to augment a weapon enhancement. Ulthane should be able to make use of it.
Essence of a Chosen: Essence extracted from the decaying husk of a Chosen. Highly magical, this ichor possesses the potential to unlock incredible power in a weapon enhancement.