heres how to get the whispers of the past Badge more in the description 

1: go to the old bunker location there should be what looks like a wide road and a entrance on the map
2: go up and u will see a hole a metal/concrete hole and u will see a ui of the e key for pc
3: listen to it make sure u have ur sound all the way up i had to turn mine down in case of copy right issues
4: like and subscribe and questions ask below