Inferno (quest)



Step 1: The test of fire
'You have access to a secret map in the Obsidemon's Hypogeum. It would be better if you didn't go in there alone.'

Reward
Level-based XP, Inferno (incarnation)

Note
It's suspected that there are other quests required to unlock the Obsidemon's Hypogeum Secret Key drop. It is currently unknown which quests these are.