Here is the full list of all 10 The Stanley Parable achievements. It takes around 25-30 hours to unlock all of the achievements on Windows.
It is impossible to get this achievement.
Don't play The Stanley Parable for five years.
Play The Stanley Parable for the entire duration of a Tuesday.
Complete The Stanley Parable in under 4 minutes 22 seconds (not including load times)
888888888888888888888888888888888888888888888888
No seriously, we disabled it.
Click on door 430 five times.
Quit the game and then start it again.
Complete The Stanley Parable.
This is an achievement.