Centaur

Opal is a doctor working at a remote clinic in the jungles of Papua New Guinea. When a strange, genetically engineered soldier drops into her life, she must run for her life to escape his ruthless compatriots, a mercenary company known as Blackstorm. Along the way, the mercenary, called "Pholus" after a mythical centaur, finds that there are "feelings stronger than instinct, and loyalties higher than money."