I was disconnected during the 4th encounter, and immediately re-entered the dungeon and completed it. I have not entered the dungeon any other time this week besides the solo run. Any chance something could be done about this? I would much rather not suffer through acolyte grenade: the game again
Hello NoswadNoob. Unfortunately nothing can be done about this. You will have to complete the dungeon again solo and in one sitting in order to unlock the triumph. I am sorry that you were disconnected on your previous attempt. However Bungie cannot manually unlock triumphs. You will just have to re-attempt the dungeon.