So, I finally (after approx. 20 attempts using only cards from the Core Set)get to Level 3b of the Journey Down the Anduin. My threat is at 44, and I finish off all the enemies except for the Wargs. For 6 rounds, I engage them and they attack first. Since they didn't get a shadow card on their attack, they return to the staging area.....6 consecutive times! I had used all 3 Gandalfs, and a Son of Anor didn't come up in those draws during the Resources round, so I came close, but lacked the good fortune to finally put this scenario behind me. How close can you come??
I find pretty much everything impossible to solo except Passage Through Mirkwood. You got further than I ever have.