Finish your first face
Faces only need 3 pieces to be considered complete. Add three pieces (or more!) regardless of type to the face and click the clock on the right to submit it.



Finish a round of 8 characters
Each face only need 3 pieces to be considered complete. Add three pieces (or more!) and submit using the clock on the right. Achievement pops during final dialogue.



Finish 15 faces
Play a second round of the tutorial. Achievement pops upon final face completion.



Does their face really need all that...?
Continue dragging pieces onto the face until the achievement pops, I believe it was 21 pieces. You don't have to submit the face to get the achievement.