Lets see.... what to say? Like the first book, I feel this is greater than a 3 but maybe not quite a 4. Although since most of the books I "LOVE" are a 4 and few get a 5, somewhere between a 3 and 4 isn't bad at all.
The author is newer, no question, and so there are some simplicities, some plot holes, some development that needs to be filled for reasoning behind actions to make sense. But there is also a solid storyline, a well built world, and engaging characters. There are people who seem almost too good to be true, and some reviews have complained about these "one-dimensional" characters, but quite frankly I know people like that in real life. It isn't one-dimensional to actually be a super good person. There are those who are doing like most of us probably feel we're doing, just trying to be good and do good but not very perfectly, but still trying each day. And there are of course those who are not evil but not good and will easily sacrifice another to save themselves, and the just plain bad guys.
I go back and forth on what to think of the monsters. Years and years of reading good/evil, fantasy, cultural, philosophical, etc. stories has my brain filling in aspects that are not there as I wait to see what unfolds and I have to remind myself to stop-it, these are not the monsters from 123 series or xyz series, these are new and I need to see how they develop. The monsters are fairly one-dimensional, they want to eat and to hurt others. But dang, there have been many creepy people on our planet like that throughout the history of time, not to mention today, people who could easily be considered monsters in their total lack of consideration for human life, people who have so easily and horribly killed so many others. So one dimensional monsters can be a very reasonable plot element as a representative of evil that exists. But then there are the monsters who have joined the side for good. What? Ok, that's where it starts getting confusing because the motivation isn't there, and yet the story hasn't unfolded so I'm sure there will be more. In order for a monster to join the side for good there has to be more to their reasoning ability than just basic eat/kill/power desires. It will be interesting to see where that goes.
The additional information added to the background between book one and two was pretty significant to the plotline and character development. Book one was almost like a giant prologue, book two starts to get into more background and why and wherefore. One thing that is odd to me is the god of good and the god of evil creating something together - there's no way they couldn't have guessed that wouldn't work out - but then that is the foundation behind Brandon Sanderson's Mistborn series and it's worked out pretty gosh darn well. I will be interested to see how much of the God's power and intersession is in the story. So many series (Mistborn, Dragonlance, etc.) seem to have both good and evil gods but for some reason the evil gods meddle endlessly and the good goods tend to stand back and watch and wait, or are in some manner stripped of power (like in Mistborn) which to me makes them non-god. The essence of a good god is a supreme being (can't be stripped of power) who is actively and lovingly involved in the lives of their followers. That doesn't mean their followers will never suffer/die, have trials, etc., but that there will be help and comfort along the way vs a god that is theoretically there but pretty much absent.
Ok, wrap-up. Good series, good plot, good characters. A little in younger category but still interesting enough to keep you reading. CLEAN! I love that, I really do. Gruesome, people die, good and innocent people die - just like would happen if it was real life - it's like watching Lord of the Rings sometimes - accurately nasty without going over the top in the way writers with no talent do. They can't write so they rely on flash and drama. This is not that author.