Old Habits: Achievement STEAM of Assassin's Creed Origins

This is the most time consuming trophy in the game. Locations are marked on the map via question marks after synchronizing the viewpoints of an area. You have to go to every question mark on the map and complete the activity there. The game world is really massive so this is going to take up a large chunk of time towards platinum. The last question mark is then found in the Sphynx in Giza (after completing all other question marks).