Unfortunately, to ensure this quest is never activated, the Dawnstar Sanctuary can no longer be visited, as this quest will almost certainly activate. Should start, but not “The Dark Brotherhood Forever.” Simply buying all upgrades from Delvin will finish that quest, which completes the Dark Brotherhood questline. Unlimited, After completed the Dark Brotherhood main story line. There are 14 or so main quests, Then 10+ contract kills, After that the Night Mother should just give you quests that keep repeating eg. This quest automatically starts upon the completion of the quest “Hail Sithis!” How many quests are in the Dark Brotherhood forever? This is a radiant quest that repeats itself indefinitely. The Dark Brotherhood Forever is a quest available in The Elder Scrolls V: Skyrim.