Armor Hunters by Joe Harris

Bloodshot

As an alien strike force descends to wipe out a sentient suit of armor, a nanite-enhanced super-soldier is sent behind enemy lines to rescue civilians and confront the invaders’ grotesque bio-weapons. Cut off and outgunned, he pushes his body and programming to the brink, improvising ruthless tactics to keep survivors alive amid quarantined kill-zones and escalating devastation. What follows is a ground-level, high-impact account of survival and sacrifice that threads through the larger war while testing the fragile line between man and machine.