Here is the full list of all 14 Jenni's DONG has got it GOIN' ON: The Jenni Trilogy achievements.
Beat all games.
End of Jenni Truth or Dare
Anwser Jenni your truly girly self
Start Jenni 3
End of Jenni's New Friend
Start Jenni 2
Have Jenni Arrested
Finished Jenni Wrong Number
Start Jenni 1
Anger Jenni.
Make Jenni Get Kicked Out
Get Jenni with 5+ Event
Get The Bottle Event
Be Jenni's New BFF