Actually there is a guide there, but it's not linked in the table of contents for whatever reason (I genuinely didn't know until looking for it just now). It's 'game 30' so within the google doc open up a link to one of the games from the 21-30 list then scroll to the very bottom. If you want fast access to an ending though, don't put any points into anything and instead buy three of the potion that forces her to masturbate then use one of the two options to fuck her each time. When it unlocks the secondary story mode just do the exact same thing another three times.
Also don't be in a rush to get the fucking segments over. You gain 'exp' for each creampie you do and there's no time limit during sexual encounters so you could just accumulate thousands of points easy by using the above method of repeatedly fucking her for like 5 or so minutes, exit that particular sequence then start it up again. Or you can just edit the values in visual studio since it's a unity game, but you didn't hear that from me.
