The Cauldron of Fear

In book 9, Lone Wolf and Banedon will need to reach the city of Tahou before the invading darklord army arrives to attack the city. The first part of the story deals with reaching Tahou; the second part is a dungeon crawl through an ancient buried city to find the lorestone. As usual, with milestones in the middle, it tends to reduce the amount of paths available, since it divides the paragraph count in two portions.

There's also the existence of a really bad path in this book where you can lose every single special item and weapon you've accumulated so far (eight books worth). Not a good thing to put in.

As I recall, this book was deviously difficult. Too many instant death situations due to a mismatch of Kai disciplines.