Fallout – In Dead Money, how to trap Father Elijah in the vault

fallout-new-vegasfallout-new-vegas-dead-money

There's an achievement for trapping Father Elijah in the vault, but he has a knack for seeing right through stealth regardless of your preparations. Other guides suggest you should be able to just sprint for the compartment in the SE corner of the room, but every time I've tried, he detects me and the blue force fields come back up just before I'd make it through the door.

How do I trap Father Elijah in the vault?

Best Answer

It's tricky to do, and he does tend to find you if you get too far away from the vault before he arrives, but it's doable:

[Elijah] becomes instantly aware if the Courier steps near either of the two forcefield barriers nearest the elevator, even if the Courier has 100 Sneak and is using a Stealth Boy.

In order to sneak past Elijah and seal him in the vault, resulting in the Safety Deposit Box achievement, simply leave the vault when Elijah comes down and remain Hidden outside the blue forcefield barriers. When Elijah triggers the trap that seals him in the vault, he will realize you've tricked him and activate your collar.