What to achieve in this game?

Here are the things you can achieve in the game mode: (Warning: Might contain spoilers of course!)

• Threesome with Kimie and Caroline
• Have sex with Stefanie
• Incest with your sisters
• Sex with Emily
• Sex with Rebecca
• Threesome with Rebecca and Stefanie (hard to achieve, write in the comments if you managed it)
• Threesome with your sisters
• Sex with your mother
• Foursome with the teachers
• Sex with Ms. Jenkins
• AND MORE...