Here is the full list of all 38 Oblivious Garden ~Carmina Burana achievements.
Finally lose the friendship with Rumi.
From now on, you live happily ever after.
The princess and the prince promised to be together forever.
That is not a documentary fiction, my princess.
All you have to do is to be a good listener.
Unfortunately, you didn't finish your job.
It is not polite to peep at a lady's diary.
Meet a strange lady in a strange place.
Some things are better left unsaid.
Enjoy Leira's violin playing.
Come across Marian at the fencing hall.
It is destined that we meet each other again.
A lily would be nice.
Do not tell this secret to anyone.
Lin accomplished her dream, and so did you.
Here comes emperor of Celantu.
Make S rank tea for the first time.
Make D rank tea for the first time.
Something serious may happen if you were not quick enough.
Are there any secrets behind her?
Collect all the tea recipes.
Get the highest level in tea game.
Collect all tea ingredients.
You made the most tasteful tea.
Get S rank in all kinds of tea.
This is an unexpected ending.
Who is that girl? You will never know.
You go your separate ways.
You finished your job, but this is not the end of the story.
Read all epilogues.
You fail to satisfy the princess, dont you?
The tea you made is not good enough to win the princess.
I may, or I may not, who knows?
Watch the credits.
It's you and not the others.
Leave the fencing hall.
Make tea that is fit for a princess.
Finish the special chapter.