Here is the full list of all 32 When the Darkness comes achievements. It takes around 3-4 hours to unlock all of the achievements on Windows.
Survive the first run.
Choose Happiness as your purpose in life.
Run away from your fears.
Go behind the Hermitage.
Successfully reach the end of the platforms.
Find all the clocks in the School level.
Discover the secret room.
Progress in the Metro.
Find the Light at the end of the Bridge.
Try to escape from the platform.
You won the game!
Wait a long time for that first red door.
Wait a long time before pressing the first button.
Try to escape in the City.
Try to find meaning where there is none.
Find the Speed Ninja easter egg.
Choose Fame as your purpose in life.
Choose Money as your purpose in life.
Choose Knowledge as your purpose in life.
Choose Creation as your purpose in life.
Select no purpose in life.
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Relaunch the game after the first run.
Discover the Sunny City.
Get a different answer.
Discover the Sunny School.
Reach the end of the second run.
Find your light.
You have reached the end of the journey.
Discover the Sunny Factory.
Try to exit the game by conventional means.
Put the ball in the goal.