I just want to say that I play this game because it is well balanced for solo (I play two characters). If the difficulty gets to a point that my characters die and I have to restart the whole adventure I would quickly lose interest in the game and most probably not buy more adventures. I do plan to start future adventures with different characters but would want to finish (and have a good chance to do it) with the current two characters I'm playing; Lem and Valeros.
I'm one of those players that don't have a huge amount of time to invest in having fun and if something is frustrating enough I don't even bother. So far this game is amazing for my play style, time and difficulty aversion.
What I really love about this game too is the minimal deck building. for instance a game that I can't play is LOTR LCG because it is ridiculously hard for solo and requires a tremendous amount of deck building which I hate.