This section will cover the end game quests for those who wish to ally themselves with Mr. House and play right-hand man to the ruler of an independent New Vegas, starting after you travel to Mr. House’s Bunker under Fortification Hill and activate his Securitron army. Return to him afterwards and he’ll reward you, then set you on the task of dealing with the smaller factions in the Mojave in preparation for the inevitable clash between the NCR and Caesar’s Legion at Hoover Dam.

The House Always Wins, III¶

The first faction you’ll need to deal with are the Boomers, and Mr. House wants them either allied with Mr. House or neutralized. Travel to Nellis AFB and talk to Mother Pearl, who will promise to help you if you’ve completed the quest Volare! earlier. If you can’t be bothered, however, you can always kill Mother Pearl and Loyal to get rid of the Boomer’s leadership. Either way, return to Mr. House when you’re done and he’ll move on to the next task.

The House Always Wins, IV¶

Despite his desire to pacify the tribes outside of New Vegas before proceeding, a threat looms closer to home. One of Mr. House’s “employee” tribes, the Omertas, have been quiet lately. Too quiet. He wants you to see what they’re up to and make sure… well, that the House always wins. The relevant quest that must be completed concerning them is How Little We Know . If you haven’t completed that quest yet, go do so now, or if you have, tell Mr. House the outcome.

The House Always Wins, V¶

Once you’ve navigated the buggy minefield of The House Always Wins, IV, Mr. House will request that you deal with another problematic faction outside of New Vegas. The Brotherhood of Steel lurks around Hidden Valley, and they - being overly-possessive technophiles - are unlikely to allow Mr. House to rule the Mojave with his robot army uncontested. Not wanting to deal with this headache, he tells you to destroy them. No diplomatic approach is possible.

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Steal each of the three Keycards you need to generate a self-destruct password (left). Then, with the password handy, activate the self-destruct terminal and put an end to the Mojave chapter of the Brotherhood of Steel (right).

Fast-travel to Hidden Valley and head down to the Hidden Valley Bunker L2 area. In a room along the south-eastern end of the level (in the room where Head Scribe Taggart works) you’ll find the Self-Destruct Authorization Terminal [Very Hard]. To generate the self-destruct password you’ll need all three of the keycards held by the Brotherhood’s Elders; the Head Scribe’s Keycard (Head Scribe Taggart), the Head Paladin’s Keycard (Head Paladin Hardin) and the Elder’s Keycard (Elder McNamara). Once you have access to the terminal, activate the terminal and select the “Generate self-destruct password” option then find a nearby Self Destruct Terminal, where you can use the password to set the bunker to blow up. Once you do, the entire Brotherhood of Steel will turn hostile, you’ll earn the “Vilified” reputation and you’ll have to flee before the place explodes… something which may be complicated by having a bunker full of angry warriors with Power Armor in your way.

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If you can’t be bothered to activate the self destruct mechanism (why waste a perfectly good bunker?) you can just murder all the Brotherhood of Steel members (left). The black plumes signal the destruction of the Hidden Valley bunker (right).

Should those two options not suit your tastes, you can always do things the old-fashioned way; just murder everybody in the bunker. However you managed it, once the Brotherhood is no longer a threat to you, return to Mr. House to conclude the quest The House Always Wins V and start The House Always Wins VI, which runs concurrent with the quest You’ll Know It When It Happens . It seems like President Kimball of the NCR is visiting Hoover Dam soon, and it’s likely that he won’t be leaving alive if some overly ambitious Courier doesn’t step in. Mr. House wants Kimball alive so he’ll be a scapegoat when the NCR’s misadventure in the Mojave is over, rather than Mr. House or New Vegas, itself. Keep him alive to die another day, in other words.