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