I almost didn't read this book, but my son-in-law convinced me it was the best of the trilogy. It is NOT! It meanders through a host of viewpoints, it has very little actual plot, and a horrible horrible ending. I wish I'd kept my own counsel and read only the first, and maybe the 2nd books, and skipped this one. I gave it a 2nd star only because I still like Vin's character.
(Updated with spoilers)
I can't seem to let this book go, I don't know if that's a good thing or a bad thing. So, further thoughts on why I'm so frustrated with the ending of this book, as catharsis if nothing else. 1) Spook as the... what, emperor? A borderline psychotic, I can think of half a dozen better candidates, even among the minor characters. Sazed as Hero of Ages, he's done nothing heroic, just learned about a bunch of religions, good for worldbuilding, even okay as the resultant god, but not the Hero of Ages. There's only one hero in the whole trilogy, one person/mistborn/god who does what has to be done, who overcomes, who defeats evil at the beginning and at the end. Titles aside, Vin is the only true Hero in the entire series, with the possible exception of Tensoon who doesn't even get to commit suicide onscreen. And I suppose Kelsier. Also, why is she evenly matched with Ruin at the end? The book goes on and on about how he's incomplete because he doesn't have his Atium body. She's whole, she should be able to defeat him in the end and not die as a result. Lose her 'powers', that would be okay, live out her life as a normal mortal, sounds good to me, but dying in that way isn't logical to me. To me her biggest flaw was her relationship with Elend milquetoast, practically ignored in the 3rd book anyway.