Chapter 4: Skulls
Match the jewels in accordance with colors (see the screenshot).
Chapter 5: Graveyard
Arrange all the parts in a way that closes the circuit (see the screenshot).
Chapter 5: Bridge
You need to choose the cables in such a way, as to make the drawing below match the one above.
Chapter 5: The Suitcase
Arrange the numbers to fill the equations (see the screenshot)
Chapter 5: The Hideout
Arrange the individual elements into one whole.
Chapter 5: The Chamber
Arrange puzzle into the above picture.
Chapter 5: Captain's cabin
Make the pattern in  match the one in  (it is best to start with the external rings). Then, arrange the side pictures as above.