Old World Blues (quest)

Old World Blues is a main quest in the Fallout: New Vegas add-on Old World Blues.

Quick walkthrough

 * Talk to Dr.Klein.
 * Enter the Forbidden Zone Dome Entrance.
 * Defeat the X-42 Giant robo-scorpion.
 * Enter Mobius' lair and reason with or kill him.
 * Reclaim your brain.
 * Reason with/defeat Think Tank.

Bugs

 * Watch out what you say to your brain. When you ask it if it wants to be reunited, and then choose the compromise option, DO NOT USE THE SECOND CHOICE! If you have completed Come Fly With Me and That Lucky Old Sun, you can get caught in a never ending loop of him talking about the quests. You cannot get out of this loop unless you reload your previous saved game. (Verified, Xbox 360)


 * Before entering the Forbidden Zone Dome, it is advisable to make a new separate save as when entering through the main entrance into the arena with the Giant Robo-Scorpion, it is possible to load under the catwalk and become stuck there.