A sleeper hit in 2022, Jalmari Helander's "Sisu" was a cartoonishly down-and-dirty adrenaline rush for action fans, not unlike the OG "Mad Max" decades earlier. That particular comparison grows even more apt with the arrival of "Sisu: Road to Revenge," in which Jorma Tommila's seemingly unkillable protagonist must battle innumerable bad guys at high speed [...]