So for the secret achievement, all you gotta do is shoot the stone/statue that is surrounded by crows on one of the map then it pops. At the minute I have two left and I am pretty sure one of them is bugged and one of them might be super difficult.
The secret achievement
Here is the secret achievement, just shoot the stone/statue that’s out in the ocean on one of the maps.
At the moment It seems like the “Say Cheese” achievement is bugged and doesn’t track at all even if you scan deers.
I am also trying to figure out how to complete the “Completly Sane” achievement, but I’ll update you if we find out.