I failed the last part of Saturn exotic quest. Could not do end guy solo. Died twice then abandoned activity on PS4. Did not show quest again on Nessus map. My quest bounty box on primary weapon slot said go back to Tyra so I thought I had to go back to regain that quest part completely. She had a golden age exotic engram for me and I got Sturm without killing end boss. Figured I'd let you guys know.