Here is the full list of all 24 Heaven Forest NIGHTS achievements. It takes around 0-1 hour to unlock all of the achievements on Windows.
Collect 50 Apples
Collect 1 mushroom
Collect 5 mushrooms
Collect 10 mushrooms
Collect 15 mushrooms
Collect 30 mushrooms
Collect 50 mushrooms
Collect 1 apple
Collect 5 apple
Collect 10 apples
Collect 15 apples
Collect 30 Apples
Collect 1 quatrefoil
Collect 3 quatrefoil
Collect 6 quatrefoil
Collect 9 quatrefoil
Collect 1 crystal
Collect 3 crystals
Collect 6 crystals
Activate 1 soul
Activate 3 souls
Activate 6 souls
Activate 12 souls
Reach the Meaning of Life