Here is the full list of all 26 Keyhole Spy: Lots of Girls achievements.
Take a look at Cynthia
Take a look at Sheila
Take a look at Grace
Take a look at Renata
Take a look at Stella
Take a look at Eleanor
Take a look at Victoria
Take a look at Clara
Take a look at Laura
Take a look at Charlotte
Take a look at Olivia
Take a look at Lyubov
Take a look at Itsumi
Take a look at Yang Min-seo
Take a look at Jane
Take a look at all the girls
Take a look at Gloria
Take a look at Glindmenel
Take a look at Asgerd
Take a look at Ignis
Take a look at Anariel
Take a look at Alcina
Take a look at Lorissa
Take a look at Evilyn
Take a look at Tenebrae
Take a look at Mara