Here is the full list of all 20 Frisky Business achievements.
Break the 4th Wall
Complete a play through with no sexy times
Get it on with all the girls
Threesome with Balbina and Serena
Dated Balbina
Piss off Balbina
Get it on with Jenny X4
No Wrong Answers in Trivia
Dated Jenny
Get all possible endings
Collect every piece of evidence
Be a Jerk to Sam and Charlie
Get it on with Tiffany
Dated Lucy
Be nice to Charlie
Be nice to Charlie and Samantha
Get the true ending
Have Threesome with Jenny and Gertrude
Get it on with Claire
Peep through all the girls windows