Here is the full list of all 23 The Adventures of Mr. Poop achievements.
Complete the journey
Complete the first location
Die 25 times
Die 100 times
Get out of the pipe
Complete the winter location
Find at least one secret level
Complete the heaven location
Complete the hell location
Complete the castle location
Complete the fairy tale location
For beginners
For amateurs
For professionals
For kings of the hill
Start the journey
Complete the forest location
Complete the space location
For hot players
Who lives at the bottom of the ocean?
Complete the mansion location
Pass the Mars expedition
MARS: Complete all levels