It unlocks the history and the darkness the looms within this realm.
Head back to the Acolyte, and he will send you to a cave just northwest of Dark Haven to slay criminals inside the cave.
Head back to the Acolyte, and he will send you to the abominations to drop off villagers. Ping the quest location with your bag and you will notice it's in Temple of Evil. Go inside the building behide Acolyte and send the villagers directly into the Abomination.
Head back to the Acolyte. He will now send you to Fira to retrieve an artifact, and give you invisibility potions to aid you in your task, along with some mercenaries. Head north to where the abominations are, and there will be a boat. It will automatically take you upstream. Land ashore, and use the invisibility potion. Head to Fira castle, and head to the corridor on the right. There is a small lockbox, containing the artifact that you need.
Head back to the Acolyte with the artifact in your inventory. There is an attack on Darkhaven, go and defeat them at the south gate.
You are sent to the Dark Forest to the enchanting pedestal with the medallion. It's quite easy to find, just south of the bridge.
Head back to Darkhaven and you will be ordered to assassinate all three high priests (Fira, Ramoria and Alexandria). Their locations are pinged, go to the pinged locations and kill all three high priests.
Go back to the Acolyte. You will be sent to the Northern Mountains to locate a secret. Head to the location pinged on the map by your bag. There will be a cave, the Forgotten's Cave. Go inside and head north to find the Forgotten. He will make you his servant and send you to kill the Acolyte. Off to Dark Haven to kill the Acolyte. You will be ambushed upon trying to kill the Acolyte. Once dead, you will obtain the Acolyte's Orb.
Head back to the Forgotten's Cave with the orb in your inventory. He will send you to the desert to find the Desert Library. Head to the Library east of the desert and Dark Haven. Inside, you will encounter a flood of infected zombies. Kill all the zombies then the Forgotten will ask you to go to the next location pinged on the map.
Head back to the Forgotten. Now released, he will want his weapons. Go to Alexandria church and dig in the center of the Church, where the golden tiles are. Return his weapon (make sure it's in your inventory).
The Forgotten will send you to the Ice Temple, Water Temple and Black Citadel to obtain medallions from the three bosses. Refer to the links for the dungeon guides. Return to the Forgotten with the medallions in your inventory. He will then send you to a small island north-west of Alexandria. You will need a dragon or a boat to get there. Head inside the tower, and inside are three guardian angels level 90. defeat them and pick the chest (lvl 10 theft required) to get the Forgotten Scroll. Now head to the fusion shop with the medallions and the scroll, fuse them together and you will get Forgotten's Shield. Now return to the Forgotten.
Required: Infernal Hammer or 75 Forging and 75 Thievery
The Forgotten will ask you to seek a red symbol inside Hell. It is located past the north door after the bridge, south of the dining room (you need an infernal hammer or smash switch to enter). Check the Hell guide for help getting there. The Red Symbol will teleport you to Haven Cloud.
Defeat the boss and pick the chest (lvl 10 theft) to get the Forgotten's Battle Cuirass. Now head back to the Forgotten.with the shield, weapon and cuirass equipped.
He will then send you to the fusion shop to get the Forgotten's Set. Return to the cave after getting the set. A chat with an angel will begin, and end in angel's level 260 spawning near you.
Mission #14 : Pillar of light
Required: Guitar (Song of Fira, Northwern Winds) and infernal hammer
Find the pillar of light (there is only 1 now). It's to the right of the pirate town. You will realize you need more power. Head to the Temple of Evil where the abominations are.
Go into Hell and quick use the hatch after the Boss door, and you'll face Diablo, level 300. Boss fight! Once defeated, the pillar becomes vulnerable. Destroy it.