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