Surprisingly I think I enjoy this one most in the series. Probably because Mal is the least annoying in this one. 

I definitely think this was a satisfying ending.

Mainly because the Darkling finally freaking dies. I feel indifferent to Alina losing her power and I don't really care that she and Mal end up together but I do like that they went back to Keramzin. The third amplifier reveal felt a little over dramatic but I guess it works. I love that Genya, Zoya and David will lead the 2nd army, and I expect that we will see them again in King of Scars. Even as one of the Darkling's monsters, Nikolai is still my favorite