I agree. Can we be for sure that that thor and malekith fight is at the end of the movie? Even if not, who's to say they won't film scenes after, that take place before that? See what I mean? Maybe Algrim is "dead" at the time of the thor and malekith fight. And Kurse fights thor somewhere else. Maybe they filmed thor fighting kurse already, but that scene will be inserted deeper into the film possibly?