What I liked about this story is that being magical doesn't necessarily mean you'll always win in a fight with a non-magical person, you still need your wits about you. And I did like how that remains clear in this book, it does make for a good story.
But on the other side, if you're still vulnerable to normal stabwounds and other magical threats are lacking, it does make me feel that this story could just is well be 90% similar if there wasn't any magic or fantasy aspect involved as well.
Okay, you have the creepy monsters that show up all of a sudden... Well, they just came along once, we fought them, some friends died, that's it. What they were, where they came from, where they went afterwards... No one knows, no one cares.
It made for an open ending, a premonition of doom if these monsters are not conquered, a promise to learn more about them in the later books (it's a trilogy), but they were never mentioned again.
It's a good story in itself, but the fantasy part , especially in the first two books, feels like a surplus and is a bit on the lame side.