While this is legacy content, the achievement Poor Unfortunate Souls seems to be bugged for solo play. When trying to acquire the Lost Soul buff, it does not seem to activate unless there is a full party. This sounds like a bug that should be fixed so a full party is not needed to complete the achievement.
I think they are forcing people to have a full group =( This is known issue. My tag is Waryeyes#1850. If you see me on both my husband and mother play. So I may be able to fill 3 spots in a group. They would log on to help me. I haven’t had luck finding help, I don’t have a guild either, came back from over a year off to check out Dragonlands.
I don’t believe it has ever been possible to do that achievement solo.
I think that should no longer be the case. Even in a guild it seems impossible to get a group going to do this achievement, it should be soloable at this stage in the game.
As a guardian during BfA I had to get help from a guild completing “Who’s afraid of the dark” because I wasn’t doing enough damage to one shot Cordana and the next mechanic wasn’t registering properly.
They aren’t saying they disagree with you, just that this isn’t the forum to ask. You are looking for a design change, you need to ask where a designer will see it. The maintenance guys who read this forum aren’t allowed to change how things work, just fix things that aren’t working as intended.
General Discussion or the Achievements forum are your best bet.