Here is the full list of all 56 Inside Jennifer achievements.
Blackmail Hope
End badly with Paul
Spend some time with Paul, late in the night
Clean Mark's mess
Jimmy goes to jail
Call Ian over for emotional support
Get back at Mark by spending the evening with Ian
Cheat on Mark at the wedding
Snitch on Hope
Go on vacation
Make up with Mark
End up with Tim
Jennifer plays with Jimmy in front of Mark
Get married to Mark
End up with Laurie & Tim
End up with Laurie
Jennifer ends Jimmy
Hope gets rid of Julius alone
Press the HOT angle button
Prank call
Make a scene in the subway
Spy on a couple in the park
Press the angle button
Don't wait for Mark
Make the first choice
Press the red button
Settings
Stay true to Mark
Stay true to Mark... As much as you can
Jennifer pays Jimmy back
Mark and Jennifer die
Mark attacks Jimmy
Jennifer gets fully corrupted by Jimmy
Become the new dean
End up with Julius
End up with Paul
Ian carjob...
Console Dimitri in his time of need
Dimitri sells the store
Help out a stranger
Go shopping
Eat at a diner
Catch the thief
Check up on Laurie and Dimitri
Get fired from work
Get hired without having to do the job interview
Fail the job interview... Miserably
Use one toy
Use two toys
Take pills
Don't clean Mark's mess
Hold Kelly's hand
Deny Kelly
Laurie drinks a spiked drink
Get every ending
If in danger: press P