Endgame scenarios (Fallout: New Vegas)

Endgame Scenarios
There are multiple ways to complete the story of New Vegas. For these quests you must choose only one faction to be loyal to. The quests for the other factions are failed when you gain infamy for siding against them with whichever faction you choose. The choice between Mr. House and Independence/Yes Man is made first during Wild Card: Change in Management and The House Always Wins, but the player is still able to choose between this choice, Caesar's Legion, or the NCR for a little longer. Its recomended to create a custom save before deciding to help any one group, around this point a quest entitled Don't Tread on the Bear! and/or Beware the Wrath of Caesar! save before you fail one or both of these. Upon choosing a group you will fail the quests for the opposing groups, it is unavoidable and not a bad thing.

Choices
Option 1: Help Mr. House upgrade and deploy his Robot army to aid the NCR and keep control of New Vegas for himself. This storyline follows the quests : The House Always Wins 1 trough 8, The House Has Gone Bust! and All or Nothing. With Mr. House you have no choice but to Destroy the Brotherhood of Steel Chapter. After this scenario plays out in the ending movie sequence you find out that Vegas and the wastes prospor, Mr house sends Victor to Goodsprings to keep guard and spy and rewards the courier with a life of luxury at the Lucky 38.

Option 2: Help Yes Man to fight for an independant New Vegas and Wastes, deploying Mr. House's upgraded robot army forcing out Legion and NCR. This storyline follows the quests : Wild Card, Wild Card: Side Bets, Wild Card: You and What Army?, Wild Card: Change in Management, Wild Card: Finishing Touches, You'll Know It When It Happens and No Gods, No Masters. In this scenario you can convince the Brotherhood of Steel to fight with the NCR (needs conformation). After defeting Legions army Yes Man will inform you that he found some hidden code in Mr. House's computers to allow him to upgrade himself to allow him to be more "assertive" and he will shut down for a while to make the changes. After this scenario plays out in the ending movie sequence you find out that New Vegas...

Option 3: Help NCR keep control of the Dam and Wastes, and take control of New Vegas. This storyline follows the quests : Things That Go Boom, Kings' Gambit,For the Republic, Part 2, You'll Know It When It Happens, Eureka!. Supposedly in this scenario you can convince the Brotherhood of Steel to fight with the NCR (needs conformation). After this scenario plays out in the ending movie sequence you find out that the NCR taking conrol of vegas leads to its downfall, but small towns like goodsprings see more business but have trouble paying the high taxes.

Option 4: Help Legion defeat the NCR and kill Mr. House taking over the Wastes and New Vegas. This storyline follows the quests : Render Unto Caesar, Et Tumor, Brute?, Arizona Killer and Veni, Vidi, Vici.

Endgame Cutscenes
see Fallout: New Vegas endings