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