Here is the full list of all 20 Immersive Poetry achievements.
Take a Photo with the In-Game Photo Mode
Reset your Progress
Leave your Journal Behind
Enter the Gate with no Gate
Investigate the Blue Object
Enter the Correct Code
Complete the Sixth Level
Complete the Fifth Level
Collect 5 Poem Parchments
Collect all Poem Parchments
See the Submarine
Collect 5 Groups of Mushrooms
Find the Music Box
Complete the Fourth Level
Collect 3 Poem Parchments
Complete the Third Level
Find your Wife's Glasses
Complete the Second Level
Complete the First level