I will be honest. I read this book just once, and usually after a new dw book, I go straight back to the beginning and read it again, but i just couldn't muster the will to do so.
It was, to my mind, far too packed with...stuff. Too many characters really spoiled the book for me. It felt like Terry was trying to give book space to almost all of his most popular characters, and I kind of felt annoyed that it wasn't a story that focused on just a few main people but a good deal too many people who seemed to be claiming the spotlight.
Vetinari, Moist, Vimes, the watch, dwarves, goblins, Harry King,...
I read it, because I wanted to enjoy it, but I just didnt. It was a big let down for me because I had loved Snuff and was forced to go without sleep till I finished that, and I was hoping for something that at least might be close to that, but it was just disappointing.
Only thing I can say in it's favour was that I finished it, which I didn't do with the long earth series.