i want to kill all the fiends that are hiding in vault 3 how do i get in the door says thier is a switch and i cant find it?

Face the vault door. Turn 90 degrees to the left. Click the door switch-thingy.

It's pretty easy to miss ^^

The switch should be on the left wall next to the door.

Later on in the Vault, watch out for 8 Fiends in a small room. (Put to sleep my 2 companions, so I had to pull out my Ballistic Fist)

Oh ... so you want to break the quest/quests that send you there for a meeting?


B)

There are missions that involve the Fiends in there....from the Khans and NCR...you might want to do them before you Scourge Vault 3. I usually loot the place first trip then come back and Cleanse it.

AFAIK, only "Aba Daba Honeymoon" fails if you kill Motor Runner, the Ranger Colonel Hsu sends you after appears outside it even if you haven't talked to the Colonel before. I say: screw the Khans!

The Kahns do give you a few nice things along that quest. More is better.


B)