The Vault - Fallout Wiki

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The Vault - Fallout Wiki
Cleansing the Commonwealth
Fo4 Feral Ghouls.png
Quest data
Given ByKnight Rhys
RewardExperience points
Bottle caps
Editor IDBoSR01
Base ID00064ec7
Related quests
Fire Support

Knight Rhys has given me an assignment to clear a location of what he calls "abominations." I need to find the location and eliminate any synths, Ferals, Super Mutants, and Atom worshiping cultists that I can find.

PIP-Boy 3000 Mark IV

Cleansing the Commonwealth is a quest that can be obtained within the Commonwealth, in Fallout 4.


The Brotherhood's mission in the Commonwealth is clear - the acquisition of advanced technology, as well as the extermination of any and all creatures designated by the Brotherhood as abominations. Knight Rhys specializes in the latter, and will frequently assign the Sole Survivor to clear out selected locations.


  • Speak with Knight Rhys in order to receive orders, which entails traveling to a randomly selected marked location, and killing all enemies marked as abominations. If a location has an interior space, the target might spawn inside. Such is the case with eg. Mass Pike tunnel, where the marker might be at the exterior raider camp, but the target ghoul spawns inside.
  • After effectively killing all of the marked abominations, return to Knight Rhys for a humble reward of bottlecaps.
Fallout 4 quests