“The Assignment” (*1/2 out of four) was a sleazy melodrama about a hitman who awakens and finds that he has had gender-change surgery and is now a sexy siren (Michelle Rodriguez) who is trying to elude her captors but now also seeks revenge on the vindictive doctor (Sigourney Weaver) responsible. Once-great director Walter Hill (“48 Hours”, “The Warriors”) falters again with a weird and ugly story which is hard to care about anything. Reunites Rodriguez and Weaver from “Avatar” but sorely lacking that film’s sincerity and grand vision.