Here is the full list of all 10 Unlock the Feelings achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Win a 7-row match
Win a 6-row match
Check how to Support the Devs
Lose a 8-row match
Write in the diary for the 1st time
Win a 8-row match
Complete the Tutorial
Lose a 7-row match
Lose a 6-row match
Write in the diary for 5 times