Here is the full list of all 27 Paradise Cleaning achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Start the game
Finish Tutorial
View Kuko's CG at gallery for the first time
View Relfilym's CG at gallery for the first time
View Ao's CG at gallery for the first time
View Arika's CG at gallery for the first time
Collect All CGs
Clear All Kuko's stage
Clear All Relfilym's stage
Clear All Ao's stage
Clear Kuko's stage 4
Clear Relfilym's stage 4
Clear Ao's stage 4
Clear Kuko's stage 3
Clear Relfilym's stage 3
Clear Ao's stage 3
Clear Kuko's stage 2
Clear Relfilym's stage 2
Clear Ao's stage 2
Clear Kuko's stage 1
Clear Relfilym's stage 1
Clear Ao's stage 1
Clear All Arika's stage
Clear Arika's stage 4
Clear Arika's stage 3
Clear Arika's stage 2
Clear Arika's stage 1