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 Vanilla
Petted Chocola
Petted Azuki
Clear Chapter 5
Clear Chapter 4
Clear Chapter 3
Petted Cinnamon
Petted Maple
Clear Chapter 2
Clear Chapter 1
Petted Shigure
Petted Coconut
Bouncy, bouncy~
Try playing it in English!
Welcome to NekoPara!
Clear Chapter 6
Clear Chapter 7
Petted Milk
Try playing it in Chinese!
Try playing it in Japanese!