In the Dead Money DLC, how do you trap Father Elijah in the Sierra Madre..

Through dialogue, you need to convince Elijah to come down and meet face to face just outside the vault. After you're done talking to Elijah through the screen, quickly find somewhere outside the vault to hide from Elijah as he enters the area. He'll make his way over to the vault and enter, and then be locked in. After that, you book it the heck out of that collapsing building!

You can make it back to where the elevator is over-encumbered w/ everything from down in this area, includuing all the gold by placing C4 at the foot of the stairs Elijah(after you convince him to come down)comes down before you enter the vault. Then talk to him, exit the vault and go up the stairs & push against the force field before he gets there. When he arrives @ the force field(remember to be pressing forward against it) like magic you & he switch places & you're on the other side of the force field w/ all the goodies. Use your detenator to set off the C4 and kill him, you don't have to do it immediately bause explosive damage will go through the force field(I think that happens, can't remember) or maybe it just gets you through the walls or something but I think that when I 1st tried to do this I killed myself accidentily, but if he gets to far away from it @ 1st he'll come back over. Save on the other side of the force field, because it could take a few tries to get him. I would make it a new save & not overwrite your save before you enterd the vault(oh yeah make sure you save outside the vault because you may need to resituate your C4). I forget where, but there is C4 & a detinator out in the landscape of this DLC or it might even be in the hotel somewhere.