This was one of those movies I have to read a lot after watching to try and figure out what happened.
Some times, you miss little things while watching and one and the other and another person see little details and between all of them you form your opinion about what you've just seen.
The "open ending" was quite confusing for me, but after reading different opinions and points of view I realised the movie is about the main character, Hernán Blanco, and nothing else. Everything points to show how and what he is. Everything that happens is about him, and after the movie ends, you will know what he is.
The thing is, it looked like there was something bigger going on, and I lost focus on the character, thinking that some twist was going to happen any time.
I do appreciate how good is the cinematography, the acting and the music on this movie, everyone does a great job on their roles, and there's a very well accomplished atmosphere of mystery from beginning to end, but it was a bit messy and inconsistent in what it was pointing at, and made me expect something else. Or maybe not messy, but a lot of little details that will make sense and add up better when you finished the movie and understood what was about. Maybe a second watch would be good.
Still, besides it was somehow disappointing, is a quality film in many aspects and I did enjoy watching it.