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