That was such an amazing series, and I found it had a lasting emotional impact. I still feel vaguely hurt and angry when I think about it!
And there are virtually no pure heroes or villains. I mean, he gets you feeling sympathetic with an expert torturer. And with a bunch of more-or-less psychotic marauders. Because he gets to to understand what's shaped them. What they've been through. And as well, it's loaded with great fight sequences.
If you haven't read his other books in that world, I highly recommend it. There's one that's largely about Logen.