The Peripheral - Tapa dura

Flynne Fisher lives in rural near-future America where jobs are scarce and veterans from the wars are finding it hard to recover. She scrapes a living doing some freelance online game-playing, participating in some pretty weird stuff. Wilf Netherton lives in London, seventy-some years later, on the far side of decades of slow-motion apocalypse. Things though are good for the haves, and there aren't many have-nots left.
Flynne and Wilf are about to meet one another. Her world will be altered utterly, and Wilf's, for all its decadence and power, will learn that some of these third-world types from the distant past can be real badass.