I have recently played it and LOVED IT! you are in the underground [or hell as Poppy calls it] and there are many monsters like the Doctor, Yarnaby, Pianosaurus and so many more plus there are new grabpack hands! there are many puzzles to complete like codes opening doors and so many more. Here are some pictures of the game!
This is the best extention of the poppy playtime series yet! more puzzles and deaths and life or death situations where you run of fight and just run in general there are notes that are key to the lore but there are also vhs tapes that explain lots as well.