Terror's End
Description
Speak to Tyrael after completing the Hellforge quest to activate this quest. Travel to the Chaos Sanctuary and defeat Diablo. You will first encounter three unique monsters: Lord DeSeis (extra strong, thieving), Infector of Souls (extra fast, spectral hit), and Grand Vizier of Chaos (extra strong, fire enchanted). Touch the seals in the Chaos Sanctuary to release these uniques one by one. After defeating all three, Diablo will appear near the pentagram. He attacks with fire, lightning, and cold. Use hit-and-run tactics and have an open portal nearby. When Diablo is killed, he will drop a unique, rare, or set item. Return to Tyrael in the Pandemonium Fortress to complete the quest.
Reward
unique item, complete the game, gain a title for your character