Here is the full list of all 13 Prompt achievements.
Upload a level to Steam Workshop.
Some things are best left undiscovered...
You have way too much time on your hands.
Best the developer in all timed challenges. Congrats!
Completed the full run challenge. Wow!
Tutorial completed.
Use the editor while green tint is on.
Beat every level in the game.
Collected every key.
Hardcore levels completed.
Died 512 times on a single level.
Hard levels completed.
Jump for the first time.