Fallout: New Vegas Walkthrough -> Mr. House's Bunker
Talk to Yes Man about ways to take control of New Vegas. Search Benny's room for clues about where he might have gone.
As soon as you leave the casino, an old acquaintance, Vulpes Inculta, will approach you. He'll tell you that Caesar wants to meet with you. Use the Pip-Boy to reach Novac, then head southeast to Cottonwood Cove. Go to the dock and speak with Cursor Lucullus there. Climb into the boat. Once at camp, head north up the hill to Fort Front Drawbridge. Then west to Caesar's tent. Enter. After the conversation, Caesar will give you a platinum chip and send you to the bunker to destroy its contents.
Wild Card: You and what Army?
Head to the weather station to the west. Inside, insert the chip into the console on the right. Now go down the stairs to the bunker. Here, Mr. House will tell you that his plan was for you to insert the chip into the console manually. In the next corridor, kill the robot by the door, then enter. Grab the Plasma Rifle and exit.
Now go into the hall and open the door at the end. Kill the robots in the room and move on. There are four more robots in the next room; dispose of them as well and head northwest to the passage. Kill the robot here too and enter the room marked "System Room." After destroying the next robots, activate the console on the right.
Leave the room without touching the robots. Before leaving the bunker, talk to Mr. House; he'll ask you to return to him. Now leave and go to Caesar. As a reward, he'll offer you a choice about what to do with Benny. Go to Benny and talk to him. After dealing with Benny, go to Caesar again; he'll say he wants you to kill Mr. House. Use the Pip-Boy to get to the Strip. In the city, head to Lucky 38 and go up to the penthouse. Here, give the chip to Mr. House, after which you'll be taken to the basement with the robots. Talk to House about his plans. Let's start by helping the Bombers .
Sources: www.gbum.ru, SSoHPKC
See also:

