They are all part of secret experiment called "undying soldiers".

Their mission is try to kill each others but it is not so easy because the experiment made em more machines than humans.They can keep fighting even with multiple mortal wounds in their bodies. Each agent got different amount of serum and they wanna find out how that will works.

elements: gunfight, sniper hunt, gun duel, heart shots, long dying agonies, hard to kill scenario, fake blood, digital blood, outdoor shooting,chest shots, breast shots, head shot, 4 outfits