Here is the full list of all 8 Sakura Gamer achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Achieve Suki's ending.
Get Clover's ending.
You successfully published a game.
Improve your friendship to Suki.
It's for research - of course.
Bump into an unexpected momemt.
Suki made up a plan, you have no choice.
Get to know your new tenant.