Here is the full list of all 12 Florence achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Completing the game
Reply only in Heart emojis
Change the color of artwork 5 times
Like all social media posts in Adulthood
Hang up on Mom 5 times
Keep both jars of Marmite/Vegemite
Get every math problem wrong
Mismatch 3 numbers
Unpack and keep both family photos on the shelf
Clean Krish's room in less then 15 seconds
Lose the fight to Krish in Groceries
Play through all of Let Go without stopping