Here is the full list of all 8 Fap Queen achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Afraid of the Succubus, are we?
We all know why you got this.
...really?
You ended the game with the Succubus.
You ended the game with the Queen, aka. best ending.
That is what you wanted, right? Right?
That is some serious willpower.
That is nice.