Here is the full list of all 21 TOHU achievements. It takes around 4-5 hours to unlock all of the achievements on Windows.
Move from the past to the future
Give the wrong potion to the prisoner
Try to apply the glove on a hand
Try all moles combinations
Click on the claw
Click on amanitas two times
Complete the game
Create the radio gun
Talk with all characters
Let them eat
Listen to all the musicians tracks
Drop the pirate into the water
Collect all creatures
Click on any of 9 birds
Go 5 times into the fog
Enter the correct code
Make the trader to run 3 times
Let the Samurai to spot you 5 times
Enter credits page
Fall down
Click on the rat two times