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