Did Passage Through Mirkwood two times. First playthrough used the standard purple deck (Aragorn and company with one core set) -- didn't make it. Second play through I custom built a purple and blue (from three core sets). Final score? 10. Would have been 8 if I didn't let my Aragorn take damage.
I'm finding the game to be fairly difficult, I can imagine that multiplayer would make things a little easier, but still hard. Definitely finding purple and blue to have the best combos. The ability to have card recursion and Sneak Attack on Threat Reducers like Gandalf and that one blue card definitely can get broken. Over the course of two turns I was able to lower my threat by a whopping 17 -- Not even the Forest Spiders would force encounter me.
Haven't tweaked much yet with red and green -- but I'm thinking green is really weak.
Game is hard because frankly...there's really not many options in the core set. Also, I am not a big fan of the way they distributed the cards. I originally bought 2 core sets so I could support 4 players -- but that didn't even give me 3 copies of each -- so I went out and got my 3rd core. I thought they would have learned that 3 copies of each card should be standard... I know they are going to release a revised core with 3 copies of each in the future or pull a Warhammer and release reprints of core cards in future big box expansions.
Hopefully I'll be able to play some multiplayer tomorrow...we'll see how it pans out.