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