Uncharted 4: 17 Easter Eggs, Secrets & References You Must Find

3. Contextual Character Trophies

Staying as vague as possible, there's a point in the story where you have to take some pictures using a smartphone. The game angles you towards the intended artefacts, but if you look up and to Sully, you can snap one of him instead.

The trophy is called "Glamour Shot", and marks one of a number of times where you can trigger additional dialogue or cool moments.

"Marco Polo Returns!" comes from diving into the water near the sunken pirate ship in the chapter, At Sea, and if you check in every time any buddy character has something to say, you'll eventually get the 'Gift of Gab' trophy.