Star Wars: Rogue One Review (Non-spolier) - Darth Vader is scary.
• The film, starring Felicity Jones as Jyn Erso, an outlaw recruited by the Rebellion to steal the plans for the original Death Star, is set just prior to the events of 1977’s original Star Wars, and references to the first trilogy abound, foreshadowing events-yet-to-come.
• The tone is, as promised by Lucasfilm, a war story – a relentless action tale. Fears that much-discussed reshoots were softening the story or watering down the ending appear to be unfounded, since the movie presents a much grittier soldier’s story than previous films. Think of it as Band of Brothers with a Star Wars setting, more than earning its PG-13 rating.........
• Chirrut Imwe, the blind warrior monk played by Hong Kong action star Donnie Yen, and K-2SO, the blunt-talking security droid played by Firefly star Alan Tudyk, steal the movie. Ironically, they both provide some of the movie’s funniest and most heart-tugging scenes....
• Finally, Darth Vader… The Dark Lord of the Sith delivers one moment of pure horror. You could argue there’s even more than one scene that fits this description. Rogue One shows a ruthless, predatory side of Vader when he is at the height of his powers.
http://www.ew.com/article/2016/12/11/strong-non-spoiler-first-reactions-rogue-one-star-wars-story