Completed - Fallout New Vegas Dead Money
With the gala event triggered you could now enter the Sierra Madre. Upon arrival you are knocked out by the security holograms & your team members are moved to different locations. You then need to track them down & along the way find out why the casino was built.
There are a lot of speakers & security holograms in this section but you can hack these via the nearest computer or destroy the speakers if they are blue or a radio. I won't spoil the game much more but once you have all the information you need then you can break into the vault. You then are giving the option to confront Father Elijah who I obviously killed. You get some nice loot in the vault which with some careful planning and a possible game glitch you can take with you back to the wasteland.
I enjoyed the DLC but I think this was mainly because after completing Fallout New Vegas in 2010 I've had an 18 month gap before playing the DLC, next up is Honest Hearts.