For me, Acheron is certainly one of the best heroes. Bad ass look with a soft side and a kind heart, despite the worst upbringing ever. Be warned, many parts of this novel are difficult to read. No big spoiler here if you read the first books in the series, (if not, stop reading this now). In the whole first part of the book Acheron goes trough every kind of abuse you can imagine (if you have extra sadistic traits like the author...) and maybe some you'll discover here. 
 And it goes on and on... after a while you just ask yourself why you're reading this. Oh... wait, yes, you liked this character and wanted to see his HEA. Well, this one was well deserved indeed. For the character as well as for the reader ;).