Jorma Tommila as Aatami Korpi in Sisu.Lionsgate Sisu Written and directed by Jalmari Helander Starring Jorma Tommila, Aksel Hennie and Jack Doolan Classification 18A; 91 minutes Opens in theatres April 28 Critic’s Pick Taking Brad Pitt’s famous Inglourious Basterds monologue to ridiculously gory new heights, the Finnish action movie Sisu is all about “doin’ one thing and one thing only: killin’ Nazis.” And director Jalmari Helander’s new film does that one thing very, very well. Across 91 swift and brutal minutes, Sisu explores new and vividly grisly ways to dispose of Nazis. They are stabbed, shot, burned, flattened, exploded, vivisected,...