I have finished the series. 
 And I am pleased. 
 Brown did not ruin it. And thank the Lord for that. 
 I wouldn't say it's the best book I've ever read, but I'd definitely say it's a good book to read. It has a nice plot; it builds your bond with the characters; it gives you reason to love the character because he is human, and not perfect; and it ends in a very sweet way that I was afraid Brown would rob us from. 
 I mean, it's a bloody book. Everyone dies - give or take. Everyone stabs everyone in the back - give or take. But still it's a satisfactory ending. 
 Darrow is a character you can love. He is sweet. He cries a lot. Like a lot which fits a character with such a messed up life. And the love bond between him and Mustang is not "in your face", which is amazing. It kind of reminds me of how Tolkien doesn't push Arwen and Aragorn in your face. But then again... he's no Tolkien (Sorry, Brown, but no one is) 
 They way Brown continuously shows us that characters can change, and people can be better, is really heartening. The way Darrow is written so that he always sees the best in people, which is in my opinion is biggest fault, is also heartening. He is the Reaper. He thinks he is a merciless killer, who has lost all compassion and feeling, and yet couldn't be further from the truth. 
 I realize that many would fault the character and get pissed at him for continuously loving those who have betrayed, hurt, and murdered those he loves and him (or at tried to, endlessly). But if anyone of you has ever lost a best friend or a sibling or a very close person to a feud or a fight or a misunderstanding, anyone who has been greatly hurt by such a person, then you'd know that it's not so easy to hate them. You'd sometimes hate them more because you know that you are so ready to forgive them. 
 To me this is what made Darrow such a good character. Such a sweet human being who believes the worst in himself, yet after all the trauma and sins, still seems to hold on to this loving innocence, despite not being aware of it. 
 All I can say is good job, Pierce Brown. I can't wait to read the other stuff you write. 
 Just don't ruin it, k?