Here is the full list of all 14 Sakura Gym Girls achievements.
Not so fitting clothes
An influencer in cute clothes and a lollipop?
Don't worry, she's a professional
You have to stretch before working out
Lifting Weights for Practice
Ranko's favorite dress
Enjoy a wine with Ranko
Watch Ranko exercise
Watch Tsumiki stretch
Tsumiki receives help exercising
Achieve Asa's Ending
Achieve Ranko's Ending
Achieve Tsumiki's Ending
Achieve the Harem Ending