Okay, so the first thing you need to know about this book is that it is visceral. The descriptions of injuries are, while not gory, graphic in the way that descriptions of pain by explaining the injury that causes them can be. 
Which, in many ways, is the point of the book - collateral damage, the people on the margins, who gets hurt when the Titans battle. 
And that’s also not really the point because the book is only SO interested in that question because it’s also a revenge story in the mode of Edmund Dantes and, in trying to be both, it does not quite manage either. 
But for all that, it was a fun and engrossing read and the premise is still brilliant.