Here I will show you where to find all Styx Master of Shadows' Gold Coins Locations. I have made each level and each zone a screenshot. I have made all zones to an image, which then gives the whole level.
There are always 10 dollars in each zone. But if you are in Zone 2 is always displayed 10/40 or if it is a mission where there are only 30 wait: 10/30.
A detailed description, I think is not required since the pictures explain it enough.
Small yet Info: The image which is in the top left of each zone is, I'm with a grimace. Don't be surprised!
Have fun with the Guide!
Here are the Locations of the gold coins in the 1st mission.
Mission - 2
Mission - 3
Mission - 4
Mission - 5
Mission - 6
Mission - 7
Mission - 8