Here is the full list of all 13 Nicole achievements.
Unlock Kurt Special ending
Unlock Kurt Normal ending
Unlock the Very Bad ending
Unlock Jeff Special ending
Unlock Jeff Normal ending
Unlock Darren Special ending
Unlock Darren Normal ending
Unlock Ted Special ending
Unlock Ted Normal ending
Unlock Park Volunteer job
Unlock Store Clerk job
Unlock Cafeteria Server job
Unlock Laboratory Assistant job