This guide is very incomplete. Even if I follow it to the letter, I still cannot get H endings with several of the characters. Very frustrating.
Several playthroughs with several fails (Karl, Alex, Ekram) while using the guide.
For example, with Karl I keep getting "BFF" achieve instead of the "more than a friend" achievement. And because I don't know which choice(s) I am making incorrectly, I have played through several times with the same outcome and it is irritating.