A well written scenario for Five Leagues from the Borderlands.
It's laid out in 7 Chapters, and you can progress without reading the next part, keeping the surprise levels interesting. There aren't any punitive choices during the scenario (e.g. if you did X in Chapter 2, suffer Y in Chapter 5), rather going with the flow of the rolled events.
In my playthrough I got really stuck during the first chapter due a LOT of bad dice rolls, but thankfully, some skills in my party helped alleviate that a little.
It has variety in it's encounters (terrain, enemy) and variety in addressing the situations at hand.
It is meant for a new warband, so there are times where my battle hardened party (~7 sessions in) had it too easy and with some good dice rolls, after the first Chapter, it was mostly a walk in the park.
The associated loot also is quite nice.
It gave me many solo play sessions to deal with.