I'm no stranger to unconventional tellings of H.P. Lovecraft, being the author of post-apocalypse Western Cthulhu Armageddon, but I have to say this is one of my favorite. It by no means is an attempt to tell a traditional horror tale with the Cthulhu Mythos but instead replicate the classic Pulp stories of good versus evil. That means Andrew Doran is against both the Mythos' many supernatural beasties as well as the Third Reich.
I do have some criticisms of this. The Cthulhu Mythos and its monsters are portrayed as monstrously corrupt entities versus alien ones and this is a missed opportunity. I, personally, would have loved to have seen the Mythos used against the Nazis rather than allied with them since they tend to represent the "Other" and it would have been fascinating seeing the two fight. No matter who wins, humanity loses.
The book is broken up into a series of vignettes which basically amount to issues of a Pulp magazine or their successors in the comic book. Andrew Doran goes to site A and encounters something nasty, deals with it, and gets gradually one step closer to Berlin where he can fight the Thule Society for ultimate power. He befriends a pair of French Resistance fighters in the process and even falls in love with one of them--an element which I was surprised by the end results of. It was the biggest twist in the novel and one I should have seen coming.
Andrew Doran, himself, is a two-fisted genius monster hunter who is thankfully flawed enough to be an interesting character. Andrew believes he's the best (and perhaps only) person in the world who can stop the Cthulhu Mythos from destroying the world but his arrogance is off-putting as well as mistaken. He alienates his allies and we soon discover the only person who might be capable of loving him is himself.
My second favorite character in the novel, after Andrew himself, is the beautiful Olivia who makes a nice foil to him. Her romance with Andrew seems a little out of the blue and unbelievable at times but there's reasons for that. I don't know how the story will go on with her after the finale but picked up the sequel just to find out, so I think Mattew Davenport did a good job developing her.
There's a lot of really entertaining moments and shout-outs for HPL fans. Andrew Doran going through the Miskatonic armory has him see numerous relics from the Mythos' various "heroes", he has a chance encounter with some Innsmouth refugees, and there's also a cool scene where he flees into the Paris catacombs only to find it full of Nazi-eating undead. It's hard to say what my favorite scene in the book is but, overall, it was always entertaining and never boring.
So, do I recommend this book? Basically, if you're in the mood for a heroic genius bruiser like Doc Savage (but with the personality of Gregory House M.D.) then I think you'll enjoy this book a great deal. It reminds me a bit of the Titus Crow novels by Brian Lumley, though doesn't get anywhere near as silly. Matthew Davenport clearly knows his HPL and while his monsters are overtly evil than surreal, that's clearly a deliberate artistic choice. I've already read the sequel, ANDREW DORAN AT THE MOUNTAINS OF MADNESS as well as Matthew Davenports' superhero novel BROKEN NIGHTS.