If you thought the ending of Avengers: Infinity War was a surprise, it appears you haven’t seen anything yet. The April sequel Avengers: Endgame will wrap up the story that began in Infinity War—and in truth will wrap up the story that began in 2008’s Iron Man, serving as a “culmination event”—and co-director Joe Russo says the final conclusion carries with it an intense amount of spoilers. Infinity War shocked audiences by ending with (spoiler alert) the villain winning out. The heroes lost, half the universe’s population was turned to dust, and characters like …