However, you can still fail quest arcs earlier than this due to infamy etc.įor more information on the scenarios surrounding the game end quests see Fallout: New Vegas endings. Once you side with a faction you can change to another faction's quest arc, only if you have not progressed down the preceding faction's quests to the point that you fail the other quest arcs from gaining infamy.Ĭompleting parts of certain quests for a faction will cause you to fail other quest arcs no matter what. The point at which you fail the other factions' quests varies depending on your actions and quests already completed.

As you follow the main quest arc for a single faction, the quests for the other factions (with the exception of Independent/Yes Man quests) will fail as you gain infamy for siding against them when you progress through the quests for whichever faction you side with. Main quest arcsįor these quests you must choose one faction to be loyal to. Note: you can skip the entire story-line of They Went That-a-Way and head straight to The Tops in New Vegas to complete the quest.