All walkthroughs fall into this category.
As a Visual Novel creator, one of my goals is to make the reader finish my whole VN. That is, reading all the endings that I’ve created. Sure it would be awesome if a reader/player can get through it all without the help of a walkthrough, but I must admit that my VN isn’t that of an awesome VN to make people play it over and over again without boring themselves. Even so, I’m proud of the visual novels I produce.