Here's one of the characters who drops your sanity hard. It's some kind of projector that walks around. And yeah this seems like it's the second level of the game, "Language". There's a different teacher who works differently than Viktor in that she doesn't move very fast but will charge you if you look at her, I think her name is Marzia. There's also a gramophone that will instantly drop your sanity if you don't periodically check it and keep it wound. This level seems leagues harder than the first one considering there's now 4 active threats you need to worry about not including Head Teacher.