The Hero of Ages

WHAT AN AWESOME ENDING FOR THE TRILOGY!!!!!

I really loved this ending. All my questions about the world were answered successfully and with no bs answers that are invented at the moment just to resolve the current problem. We even get explained the subtle clues leading to each reveal, even referencing scenes in the first book I just overlooked. This makes a very satisfying ending because you feel that you could have predicted the twists, making them believable and justified. Even when you can foresee a plot twist, it is fulfilling to see it unfold, because there will be always something you did not expect.
Nothing new... Brandon Sanderson is just an amazing writer.

My only complaint about the book, is regarding a Scene towards the end, not gonna spoil anything... but I had the feeling it was too much bs and over the top, but somehow Sanderson brings it back down and makes it justified. That's why gave it 5 stars instead of 4.

The book on its own is Great. Once again it takes a page from the second entry in this trilogy (the well of ascension) and focuses more on the side characters and their development. This book gives us a new perspective from Spook, the quiet boy from the first book, who was overlooked by everybody including the readers.
This has led me to like the side characters more than the main ones... But everybody gets its time to shine, and somehow everybody becomes in the end a main character.
As mentioned above this book is also the most meta of the trilogy, since we get a look into the world and learn how everything works, making it more satisfying.

All in all a great book and an awesome trilogy. Go read it.

(Edit)
P.S.
This series has also a very interesting perspective on religion. This trilogy explores on the side what is religion and why people believe in it. Me being an atheist have found very interesting points, making me understand why people believe in religions. Don't think this is some kind of religious propaganda, quite the opposite. Each entry explores a perspective of religion, with its virtues and flaws. For example, the first book explores religion as a tool for control. The second one explores the logical flaws of Religion and finally the third explains why people believe in religion even with its flaws. Just an interesting take it took from this book. It still can be enjoyed without thinking about religion and believe.