So, trying to pick the tennis perk just selects the massage one instead for some reason? And honestly, what exactly each perk does is a lot less obvious than it previously was.
Thanks for checking the game out! Here is a small compilation of answers for some of the questions asked so far:
Writing is definitely one of my weak points as English isn't my first language, but I'll try a bit harder when it comes to the writing process.
Progressing through the story based on the endings discovered / perks unlocked is definitely something I have in mind. I already added this a bit with the personal assistant ending and will continue expanding on this as I build a longer and more complex story.
In terms of mechanics, yes Incubus city was an "inspiration" . That being said, I have no intention of adding that type of content (violence and stuff like that).
I was going to include the achievements as part of the walk-through but preferred releasing the first version as is. I'll try to have this added by the next update.