It took me 5 days to complete the dungeon solo. No checkpoints from other players, no players helping mid encounter and leaving, nada. All of it solo. But when I completed the dungeon on July 11, the triumph was not complete and I didn't get the ghost shell. I would put my final encounter here, if it weren't so long. Please Bungie, I know Destiny has bugs, but this is the first time I've ever seen it happen to me and on my first ever solo dungeon.