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 translate some texts from language to language.
Can read and correct texts after translator.
Can purify pages, make them clean.
Can scan new pages for the team.
Bad Ending II.
Normal Ending.
Be a true professional!
Good Ending.
Pesky birds!
Can find out prerelease shortcomings.
Bad Ending I.