Hopefully bringing this back a bit. I've played for a little while some solo some with my brother. How do you keep score? I was curious about that.
Otherwise, I've gotten through all of the base set plus Hills of Emyn Muil by myself. I don't have the rest of those smaller expansions but I'm looking to get them. I use a tri-color deck using Aragorn (Leadership), Glorfindel (Spirit), and Bifur (Lore).
My brother and I have beaten that plus all of the base for Dwarrowdelf. We also beat The Redhorn Gate and Road to Rivendell. I usually went leadership and tactics and he played a spirit and lore deck. We both used dwarf decks to maximize our synergy. Again I don't know how to keep score so I don't know how well we did together or me going solo.