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