Although there are elements of Romanticism in the text, particularly in regards to descriptions of nature’s effects, the story is also Gothic what with all the supernatural and creepy events. Further, the things that happen are sad. People die. That’s tragic. The biggest tragedy is that the most human character, the monster, has no outlet for his feelings of benevolence towards humanity. Things also seem to be predestined once a singular act sets them in motion, so that would indicate a certain sense of fatalism here, too.