this could work for a last man standing movie, were a solider has to complete the mission but as his squad is killed one by one, the solider finish the mission, but is killed by a hostile solider, as the solider dies he remembers the sacrifice his fellow soldiers made
Is that supposed to be that anime where a person can kill themselves and they won't die at the same time they have something called a shadow that allows them to attack people or defend themselves. I remember it was called Majin