Here is the full list of all 15 The Puppet of Tersa achievements.
Check the room thoroughly while looking for the voice.
Get Cynthia to mention ginger ale.
Be welcomed to Tersa.
Get the attention of a bunnysnap.
Complete the Bucket Puzzle in under 15 moves.
Find out everything about Little Doofer.
Assemble the flute.
Lead the Soul to the Wilsol Tree.
Catch a swamal.
Catch the hamper without missing.
Hear everything the tortoise has to say.
Make your way through the maze without crossing your own path.
Create the furry snowsuit.
Complete all of Episode 1.
Complete all of the achievements in Episode 1.