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