It's presently the responsibility of the party to go and leave the underworld to get to their mission in Lookshy.  While you're down in the underworld, you also could try contacting the ghosts of the Lookshy dead for information about the defenses of the city.<br/><br/>The ghosts of the Gunzosha, in particular, would have reason to have a grudge against the city, since they were implanted with amulets that drained their lives away, causing them to die of old age around age 40.  If you can get through the thick layer of brainwashing the general staff put into them, you'll be able to extract details about the most secure areas of the city.