Okay so everyone was/is right: this book is fantastic! 
 From the world building, which is honestly one of the best I've ever read to the characters and the magic system. This book reaches perfection! 
 There was never a dull moment, I was never bored. Even when at one point I would be like: "you know if we go on like this, it could be boring.", well, the story changes direction and that thing that could have been annoying wasn't. I think you need an example: at the beginning Vin doesn't trust anyone. She scared to truly get to know anyone, and she always thinks things like: "don't get too close to him/them, he/they will betray you in the end." If Brandon Sanderson would have keep this the whole book, it would have been annoying. But Vin changed, she grew up and she become such a badass. 
 And the end... wow the end was so stressful but so so good. 
 Brandon Sanderson can write some amazing stories. And some amazing characters. I talked about Vin, but Kelsier was an amazing character as well. The whole crew was so good, and diverse and unique (and yes, if you take a look at my status, Breeze was my personal favorite. I just truly adored him, and just a little bit more of him would have been great) 
 Overall, amazing book, well written, just so good!