Here is the full list of all 12 One Manga Day achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Can type texts to the images.
Can find out prerelease shortcomings.
Good Ending.
Can translate some texts from language to language.
Bad Ending II.
Can read and correct texts after translator.
Be a true professional!
Can scan new pages for the team.
Normal Ending.
Pesky birds!
Can purify pages, make them clean.
Bad Ending I.