Here is the full list of all 32 Elemental Girls achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Serafina Hight
Selina Hight
Pelagia Hight
Selina Normal
Serafina Normal
Pelagia Normal
Pelagia Easy
Korentine Easy
Hera Easy
Gaia Easy
Zinovy Normal
GameOut
Agnia Normal
Genevieve Normal
Zinovy Hight
Lesma Hight
Korentine Hight
Hera Hight
Gaia Hight
Agnia Hight
Genevieve Hight
Lesma Normal
Korentine Normal
Hera Normal
Gaia Normal
Selina Easy
Serafina Easy
Zinovy Easy
Lesma Easy
Agnia Easy
Genevieve Easy
GameOn