The House Always Wins II

The House Always Wins II is a main quest in Fallout: New Vegas.

Synopsis
Mr. House's Securitrons on the New Vegas Strip may have been upgraded, but there are hundreds of them that lie beneath Fortification Hill that House still requires for the upcoming Second Battle of Hoover Dam.

Walkthrough

 * 1) Travel to Cottonwood Cove and take a raft to The Fort after having gained access.
 * 2) Use the Platinum Chip to gain access to the Securitron vault within the weather monitoring station
 * 3) Upon reaching the end of the vault, activate the Securitron army with the Platinum Chip.
 * 4) Return to Mr. House for further assignment.

Bugs

 * If the player returns to the Lucky 38 and gives the Platinum chip to Mr. House before activating the Securitron army at The Fort, the quest becomes stuck. Mr. House will send the player to activate the bots but he doesn't return the chip to the player so that the player can't actually enter the vault resulting in a broken quest. The only way around this is to activate the bots before turning in the chip to Mr. House, or, if you're on PC, giving yourself another Platinum Chip using the console command.
 * Upon completing Part II, returning the platinum chip and receiving your reward, the dialogue will end and the screen fades out. When the screen fades back in, the character may be frozen in place and unable to interact with Mr. House.
 * After exiting the secret bunker (regardless if you did anything or not), Caesar's Legion may "forget" that you are trying to help them and you will then gain Legion Infamy and be attacked, leaving the player no choice but to fight them or reload an earlier save, before talking to Caesar.