Ubisoft has released a new free update for Assassin's Creed Origins. This brings a new quest and upon successful completion of the quest rewards you with exclusive Final Fantasy XV weapons and a mount.
In order to get to the Chocobo Mount and all other weapons you have to find and solve all the puzzles in the side quest "A Gift from the Gods".
Below you’ll find the locations of FFXV mount and weapons and also guide on how to solve the sun dial puzzle:
The quest starts in south west of Memphis, just below the two pyramids. It is a green symbol. If you are there, take the quest.
Then go to the location where the space rock (fireball) has crashed and interact with the fallen star, then the entrance to the tomb will open and the sun dial puzzle will begin.
Next go outside, look for the sun dial on the floor, with the pillars around it. Stay and wait until dawn, then they should open the inscriptions of the pillars, then shoot at the pillar until the blue rays shoot into the sky.
This will open the tomb for you, so go there and enter the tomb. Run through until the video sequence starts, at the end you will receive the three Final Fantasy 15 items: Chocobo Mount, Ultima Blade and the Shield.