I am new to the game. I have finally beat Passage through Mirkwood and Journey along the Anduin on normal with 2 core sets. I used a tri-sphere deck of: Leadership. Spirit, and Tactics. Here is my deck list

Good work! Journey Down the Anduin is no small feat. Don't even bother trying to beat Escape from Dol Guldur solo. It will just lead you to endless frustration.

I did try, I just gave up. JdtA was tough enough. The first time I played it on normal it was close but I lost near the end with an unlucky draw. The second time I played when I did win, it was basically the same thing but I didn't get unlucky. If I had gotten a bad when revealed or shadow I would have lost. It was really close

https://community.fantasyflightgames.com/topic/187485-just-bought-the-base-game-and-a-little-disappointed/

Huh? Didn't you say in this topic that you played and beat all 3 quests the day you bought it?

Yes. That was with my wife on our first time playing. Lots of mistakes. This was solo with a singe deck. And, at least from the core set. It seams core set quests are not as hard with 2+ players. It was incredibly hard for me to beat solo with a single deck

Escape... in solo is doable if you choose the hero that gets captured (that's what I always did).

Might do that or just wait in tell I get more cards. Escape is ridiculously hard solo.