Here is the full list of all 20 NEKOPARA Vol. 2 achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Petted Milk
Clear Chapter 7
Clear Chapter 6
Petted Coconut
Clear Chapter 5
Clear Chapter 4
Clear Chapter 3
Clear Chapter 2
Clear Chapter 1
Bouncy, bouncy~
Try playing it in Chinese!
Petted Cinnamon
Petted Maple
Petted Vanilla
Try playing it in Japanese!
Petted Chocola
Petted Azuki
Petted Shigure
Welcome to NekoPara!
Try playing it in English!