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.
Selina Hight
Serafina Hight
Zinovy Hight
Korentine Hight
Hera Hight
Agnia Hight
Genevieve Hight
Pelagia Normal
Hera Normal
Gaia Normal
Agnia Normal
Serafina Easy
Zinovy Easy
Lesma Easy
Pelagia Easy
Korentine Easy
Hera Easy
Gaia Easy
GameOut
Lesma Hight
Korentine Normal
Pelagia Hight
Genevieve Normal
Gaia Hight
Selina Normal
Serafina Normal
Zinovy Normal
Lesma Normal
Selina Easy
Agnia Easy
Genevieve Easy
GameOn