Matt is a mercenary with a conscience, and PTSD. Years ago, while operating a drone, he realized he'd killed a child, and since then, he's gone to extremes to ensure that no innocent lives are lost on his watch. He made have replaced all four limbs with AI guided cybernetic replacements with more armaments than some small countries that act on threats even before he notices them, but he's the one who programs what constitutes a threat. Of course being a cyborg isn't easy, and repairs and even maintenance costs a lot of money. When he takes a job he has bad feelings about--because he needs the money and the odds of it going back are worse if he's not there--he gets drawn into something bigger, when the package he's assigned to escort turns out to be another person, a woman with a panic-disorder who's been bio-modified into a human weapon against her will. An innocent. And that means he's going to have to turn against one of the most dangerous corporations in the world.
This is a book I almost didn't pick up, but I'm glad I did. And honestly, for all people say, "Don't Judge a Book By Its Cover" people do, and I think this cover really did it a disservice. The art makes it look almost like a comic book... and I like comics, but that's not really the right vibe for this and I think one that makes people who would otherwise really enjoy this dismiss it. While there are certainly a few comic booky elements and ridiculous, over-the-top action scenes, it's definitely science fiction, and I'd even go so far as call it one of the best and most inventive cyberpunk books of the last decade or so. At least that I've read.
For one thing, it's one that really grapples with the idea that, with this level of technology, on-the-spot human judgement is secondary and often inferior in combat. At a certain point we'll reach a phase where a human who doesn't turn over his weapons to automatic targeting is at a distinct disadvantage against those who do, and the author manages to actually work with that and still make scenes exciting with a protagonist who's got some level of agency. And it doesn't stop there, because he actually manages to sell the difficulties of going up against a corporation, guided by advanced AI, that can predict most of your potential moves, and still convincingly give the human a chance. This type of story might not be sustainable over the long term, but with a story like this (where it mostly takes place over a very short time after the initial plan goes to hell and everything must be improvised despite these limitations and an opponent guided by much better AI), it works, and it does so surprisingly well. Even the ending, when I first read the surprise revelation, my first instinct was that it was a little bit on the cheesy side but by the time he explained it I came around completely to liking it (and even if I hadn't, it would have just been a minor stumble, not enough to ruin my enjoyment of the book).
It also ditches some of the problematic tropes Cyberpunk sometimes comes up with (such as cybernetics itself being magically, inherently dehumanizing), creating a realistic portrayal of humans with mental health issues that interact with but are not defined by the technology they use.
I could quibble a little with a few things... the constant "I just reprogrammed these settings on the fly" type things maybe strained credibility somewhat at times, and maybe the relationship had to progress so quickly that it lacked depth (or rather got too deep because of only superficial connections), but given the short timeframe it's hard to do otherwise. But on the whole I thought it was all really well done and I liked it a lot.
I think I'd put it at 4 stars.