A fitting end to the series.  I am sad to see that it is over.  I will miss the story and the characters (those that are left).  The ending was very satisfying aside from one part that felt a little too deus ex machina for me.  There was a little hinting to it (something Gwynne does well) but it still saved the day a little too suddenly.  On the other hand, this is one of the few stories I have read or watched lately that I did not feel like the climax was rushed and too easy.  Gwynne did a great job upping the stakes and suspense and drawing out the scenes that needed drawing out.  He didn’t rush to the conclusion.  The story moves around in surprising but fitting ways.  He brought all the characters together for a natural and epic finale. 
He stayed consistent in his writing, which means I have the same general complaints as the previous books.  But at this point I have accepted it as just part of the story and it doesn’t really bother me anymore.
I highly recommend this series to fans of fantasy.  It has everything you could want, giants, magic, angels, demons, swordplay, betrayal, deception, massive and epic battles.  Exactly what you look for in a fantasy.  This series has given me plenty of ideas for my own writing and provided me with many hours of entertainment to boot.  Thank you Mr. Gwynne, these books are going on my VIB (very important book) shelf.