Instructions
Set the medallion down on the pedestal in the center of the courtyard. You collected the medallion in the left door of the final area. An image will appear in the center of the screen of a sun face surrounded by nine masks. Notice that the sun face is on the ground of the courtyard as well and that nine empty pedestals surround it.
Click on "Pause/Menu" in the lower-right corner and access your storage menu. Pull five of the nine masks out of your storage menu and into your inventory. Five is the maximum number of objects you can keep in your inventory at one time. You collected nine masks as you wandered around the final area before you got to the center of the courtyard.
Drag each mask onto the appropriate pedestal around the sun face. Match the mask on the pedestals to the order of the masks on the sun face medallion image.
Pull the remaining four masks out of your storage menu and into your inventory. Drag each of these masks into place around the sun face. If you match all nine masks successfully, you solve the puzzle.