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