how does Miller make the ending of the play so powerfully dramatic?act 2

Despite Beatrice and Catherine’s protestations, Eddie confronts Marco in a wild-eyed rage, claiming he needs his name. Marco moves toward him and Eddie pulls out a knife. They struggle and Marco turns the knife into Eddie, fatally wounding him.

Eddie dies in Beatrice’s arms. Alfieri, who was in the crowd, laments what happened but muses that Eddie is unique because he did not settle for a half life –he was wholly known and lived completely.