Finish chapter 1.
Complete the tutorial.
Finish chapter 2.
Finish chapter 3.
Finish the game.
Finish chapter 4.
Finished the game a second time.
Complete a puzzle by cheating or guessing.
Spent more than 5 hours in the game.
Looked through a telescope for more than 2 minutes.
Spent more than 30 minutes in Emily's room.
Combined the dog and grave on house number 2.