Underground Undercover

Underground Undercover is a quest and achievement/trophy in Fallout 4.

Quick walkthrough
Infiltrate The Institute and meet with The Patriot.

Bugs

 * It is possible that Desdemona will not initiate dialogue when trying to warn her about the brotherhood.
 * This may be caused by Glory being dead. To fix go to Railroad HQ and use recycleactor 000508EE and 000508EE.moveto player in the console.