It's very scary, but not that graphic; occasionally a character will get shot or harmed by another, but most of the violence in The Terror comes from nature: dying from a great fall, for example, or being frozen alive.
Terror is usually described as the feeling of dread and anticipation that precedes the horrifying experience. By contrast, horror is the feeling of revulsion that usually follows a frightening sight, sound, or otherwise experience.
Run a security scan to remove any viruses or malware infections. Try creating a new administrator account to resolve permissions issues. Uninstalling and reinstalling the Blizzard App may resolve rare launcher issues.