Here is the full list of all 32 Nyasha achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Michie Normal
Arizu Normal
Tomiko Easy
Keoru Easy
Shinju Easy
Aki Normal
Megumi Normal
Keoru Normal
Megumi Hight
Shinju Hight
Hikeru Hight
Tomiko Hight
Nori Hight
Michie Hight
Keoru Hight
Yoko Hight
Aki Hight
Arizu Hight
Shinju Normal
Hikeru Normal
Tomiko Normal
Nori Normal
Yoko Normal
Hikeru Easy
Nori Easy
Michie Easy
Megumi Easy
GameOut
Yoko Easy
Aki Easy
Arizu Easy
GameOn