Here is the full list of all 28 Verlet Swing achievements.
Earn all achievements
Complete the Marathon challenge under 15 minutes
Find the Julbock’s hidden entrance!
Complete all available challenges
Complete the Hardcore Marathon challenge
Earn all available perfect rankings
Earn all perfect rankings in Crimson Court
Enter through the goat eye in The Depths
Earn all perfect rankings in Wondercon 1998
Earn all perfect rankings in Nimis Non Laute
Earn half of all available perfect rankings
Earn all perfect rankings in Mobymart
Earn all perfect rankings in Checkmate, History
Complete half of all available challenges
Create your first level
Publish your first level
Complete Crimson Court
I beat the final level and all I got was this crappy achievement
Complete a challenge
Die more than 50 times on a level in a single go
Complete Wondercon 1998
Complete Nimis Non Laute
Earn your first perfect ranking
Hook something extremely far away
Complete Mobymart
Reach more than 130 km/h
Complete Checkmate, History
Die while moving really fast