What the f*ck really sums up my thoughts the entire time I was reading this book.
Anya was quite a character, I wanted to feel for her in the beginning but she showed her colors quick, and Mercy, she was intense. She also kept blowing my mind, she just kept getting more and more crazed, I wasn't sure how she was going to keep topping herself. 
The ending was good, a nice build, no loose ends. Things started falling into place but still had one or two curve balls at the end I enjoyed.