In each a Level a Golden Skull can be collected in an area with a hidden entrance and most times furnished with a lot of traps and no Checkpoints. In comparison to Coins the golden skull is not collected when Mos dies before reaching a checkpoint. When you collect the Golden Skull and reach a checkpoint the skull is also saved. To finally add the skull to your collections you must Finish the level. Collecting the golden skull grants the Achievements: Skull novice, Skull finder, Skull collector and Skull museum.
Secrets and Easter Eggs
You can marvel your collection of Golden Skulls in the Skull Museum.
There is a Fake Skull that will trap Mos in a room.