Armor hunters. Bloodshot

"With the major capitals of Earth under siege by the Armor Hunters, the world's most dangerous weapon has decided to come in from the cold--and into the service of the top-secret Military Extraterrestrial Reconnaissance Outpost (M.E.R.O.)! But when one of the Armor Hunter's own stages an extraterrestrial jailbreak inside of M.E.R.O.'s fortified command center, the nanite-enhanced commando known as Bloodshot will become the last thing standing bet...