Here is the full list of all 14 Jenni's DONG has got it GOIN' ON: The Jenni Trilogy achievements.
Start Jenni 3
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
Anwser Jenni your truly girly self
Be Jenni's New BFF
Beat all games.
End of Jenni's New Friend
End of Jenni Truth or Dare