Here is the full list of all 18 BlueberryNOVA achievements.
You did not go to the girl in the park
You drink this!
You have a relationship with Eva and Yuki
What happened between you and Yuki just a random
You did not start a relationship x2
Relations with Yuki
You found a note
What is it?
Are you a cook
Relations with Eva
You did not start a relationship
Thanks for reading
Eva suddenly embrace you
Your first day in college
You approached a stranger in the park and offered her your kerchief
You had a nightmare