I know the game been out for ages and this is yet another video guide for this.
On the video below, you can see where I am standing before approaching any collectible. Think it makes it easier to locate yourself on the map, rather than having pointed where the collectible is. This video uses a path on which I'm getting every Landmark and Hint. Luckily or not, there is somehow a benchmark in the middle when you collect 100th Landmark and right after 25th hint.