Alright, I'll start with a walkthrough/game tips since I haven't seen anyone do it yet and I've spent enough time with this, consider that I will make heavy SPOILER's, so if you don't want to get your experience ruined, don't read my message...
The game contains bad breath, farts, futa docking, dick vore and avoidable scat (this is the only avoidable fetish)...
I'll take the liberty of calling certain parts of the game Acts, which are the 3 missions you get on each place, first act consists of the first 3 missions with Noelle..
First and important tip: save at each option to check the corruption part and make it to the end...
1 - DON'T go full "corruption" on this game, because you'll trigger a lot of game overs over, and there's also a game over about the days that pass, if you want to see all scenes, or all game overs, just go ahead and do meditation on all the acts and sleep or go full corruption, but this way the game will take a lot of your time, so take my tip as a gold one to not spend a lot of time re reading and seeing scenes you don't care...
2 - Act 1 - Noelle 3 missions, first off, when you get the options to kill her or can't kill her, choose "kill her" sinfulness in this game is really a detriment and you don't want to spend 2-5 hours replaying it from start...
On 2nd mission, Call Glenvy...
On 3rd, you'll see Glenvy naked, if you are going full "pure" you will automatically dodge corruption options here, if you go for a corruption route, peek and jerk using her panties...
Act 2 - Alberta: she's a masochist, but the trick is to NOT accept any of all her scenes...
1st mission: focus on the metus...
2nd mission you'll get forced sinfulness and forced to lose 1 day...
3rd mission: turn back...
Act 3 - Noelle in Helmnitz...
Esp. option: Kill her...
1st mission: Prevent the Ritual...
2nd mission: Don't eat...
3rd mission: join...
Enjoy main "good" ending...
For the main bad ending at the beginning of act 3, when you're playing Glenvy, question the red demon about the blue one...
If there is another ending I probably didn't reach it and I'm sorry, passing through all the scenes was nice, but repeating the game so many times it made it repetitive...