Has anyone experience with the saga Campaign true solo?

I am slowly working my way up the game progression style.
Right now I am at the journey to the cross road. Sooo hard!!
But I always played the quests without the boons and burdens, and didn't bother to keep the same heroes.
Always kept in my mind the wish to go back one day and play it on campaign mode true solo.
But after seing/playing a lot of the quests, I am starting to wonder if this is at all feasible true solo.

Has anyone sucessfully tried it?