If ever a hitman is assigned to knock me off, I hope he has more personality and zest for life than Michael Fassbender’s character in “The Killer.” Narcissistically, I would like to think that the person tasked with killing me would be a charming man or woman and that somehow my life’s value would gain in stature in proportion to my assassin’s allure. With any luck, the hired gun would also miss, leaving me not only glamorous by association but still alive as well.