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