So this'll get you to the part that is the 2nd to last part of the urn quest line. Also, dunno if this has already been posted. Basically I just did the chamber of night mission and went all the way through until I killed the ogre. Instead of completing the mission by sending Dinklebot to the control panel, I just went to orbit and started the mission again. Kept throwing me into the mission right before the room where you fight the ogre. Rinse and repeat for the thralls, cursed thralls, wizards and acolytes. Also a few vanguard bounties you can complete there whilst doing it.