Here is the full list of all 38 Pretty Girls Panic! achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Clear all stages of YUKATA girls.
Clear all stages of characters.
Clear all stages of CECIL.
Clear all stages of REIU.
Clear all stages of SERAS.
Clear all stages of AISIAS.
Clear all stages of YUUKO.
Cleared YUUKO Stage2.
Cleared YUUKO Stage1.
Clear all stages of AKENO.
Cleared AKENO Stage2.
Cleared AKENO Stage1.
REN stages all cleared
Cleared REN Stage3.
Cleared REN Stage2.
Cleared REN Stage1.
Clear all stages of KAORI.
Cleared KAORI Stage3.
Cleared KAORI Stage2.
Cleared KAORI Stage1.
Clear all stages of SAYA.
Cleared SAYA Stage3.
Cleared SAYA Stage4.
Cleared SAYA Stage2.
Cleared SAYA Stage1.
Clear all stages of AMI.
Cleared AMI Stage2.
Cleared AMI Stage1.
Clear all stages of HIROKO.
Cleared HIROKO Stage2.
Cleared HIROKO Stage1.
Clear all stages of SHION.
Cleared SHION Stage2.
Cleared SHION Stage1.
Clear all stages of MAYA.
Cleared MAYA Stage1.
First game play.