Here is the full list of all 40 The Last Secret achievements.
Finish the Prologue to get this achievement!
Finished Chapter 1
Finished Chapter 2
Finished Chapter 3
Finished Chapter 4
Finished Chapter 5
Finished Chapter 6
Finished Chapter 7
Finished Chapter 8
Finished Chapter 9
Finished Chapter 10
Finished Chapter 11
Finished Chapter 12
Finished Chapter 13
Finished Chapter 14
Finished Chapter 15
Solve the 13x11 puzzle
Solve the drink mix puzzle
Find the right move and impress Honghong
Win against Magarita
Win against the supermen
Get the equipment for your friends
Aim well and shoot fast
Find love with Honghong
Find love with Ben
Find love with Karina
Find love with Meilin
Save your friends and the world
Find love with Anna - in space
Find love with Anna - on earth
Escape from the escape room
Take a closer look at the painting
Study Go with Karina
Study more Go with Karina
Reveal the truly last secret!
Finish the game entirely
Have a vision
Win the game against the "punk"
Win the game against the little boy
Start the game and finish the short tutorial