Cape: Cloak of Insatiable Greed, Drape of Gluttony
Ring: Serrated Demontooth Ring
Trinket: Unending Hunger
Weapons: Spur of the Great Devourer, Voracious Souleater, Gibbering Madness
Tier Armor: Legs
Tome of Chaos for the legendary questline can be obtained while on We Don't Need No Library Card.
Well of Souls allows players to kill Normal Gorefiend 4 times for Soul Remnant and unlock Soul Conduit--a teleport to the upper level bosses in Hellfire Citadel. There are also Heroic and Mythic versions of the quest available.
Each Hellfire Citadel boss has a unique achievement that counts towards Glory of the Hellfire Raider. This rewards Infernal Direwolf. Gorefiend's special achievement is Get In My Belly!.