Here is the full list of all 22 Umineko When They Cry (Question Arc) achievements.
Read EP1-4.
We’ll always remember you.
Complete the fourth Hidden Tea Party
Complete the third Hidden Tea Party.
Complete the second Hidden Tea Party.
Complete the fourth Tea Party.
Complete the third Tea Party.
Complete EP4.
You foooools!!
Or do you?
Complete EP3.
Now, we can begin.
Please make it back in one piece and/or enjoy your stay.
Complete the second Tea Party.
Need I say more?
Complete EP2.
We do hope you enjoy your stay and also survive.
Complete the first Hidden Tea Party.
Complete the tea party.
Complete EP1.
All of the pieces are in place. What will you see on the gameboard?
We do hope you enjoy your stay and this experience of a lifetime.