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