Legacy of Orsinium consists of a main storyline and additional side content, and is safe to install during your current playthrough. Main Quest: Started in Mor Khazgur. Chief Larak and his son Olur must both be alive for this quest chain to start. All other Orc strongholds have received new standalone sidequests, based on unrealized or cut content from Skyrim's original release: Largashbur: Complete the Cursed Tribe quest, then speak with Gularzob. Dushnikh Yal: Speak with Chief Burguk Narzulbur: Speak with Urog or Dushnamub.