While heading towards the Forgotten Shore, proceed past the large waterfall and trees, and then over the river. At the next turn in the path there will be a small cave set into the cliff side. The Ghost is hidden a small crevice on the right hand wall of the cave as you enter.
Earth: Golden Loot Chest #03
In the same cave as the Dead Ghost, the third golden chest can be found behind a rock on the left hand side of the cave as you enter.
As you enter the Forgotten Shore you will notice a series of rusted beached ships. Head to the closest and largest ship to find the first of the Fallen amplifiers.
Earth: Golden Loot Chest #04
As you enter the Forgotten Shore from the Mothyards, follow the river to the sea shore. Enter the water and follow the left hand cliff past the rusted iron girders to the rocks beyond. The golden chest is hidden on the rocks to the left prior to the metal pillars jutting from the sea.
The first amplifier will be protected by a Fallen Captain and several Vandals. Approaching the amplifier will allow you to intercept a Russian signal.
Dispatch the surrounding Fallen and deploy the Ghost.
Once the Ghost has scanned the amplifier you will need to continue onto the second amplifier.
Head off the ship and proceed up to the dilapidated structure on the hill to find the second and final amplifier.
After scanning the final amplifier within the decaying structure, turn around to discover a set of stairs leading below. Follow the stairs all the way down to a room below. The Ghost is hidden beneath the stairs entering the room. Beaware as there are three highly leveled Hive Knights (the Celebrant of Oryx and two Hallowed Knights) within this room who can deal heavy damage.
Breach the old array complex to locate the source of the Fallen operation.
― Objective description
Head out of the building towards the structure adorned with large antennae in the distance. This is the Terrestrial Complex, another installation of the Skywatch and the apparent source of the transmission.
Proceed up to the building by following the road and under the yellow sign. Follow the cliff edge to the entrance of the complex.
The entrance to the complex is protected by a Fallen Captain and his entourage of Vandals and Dregs. Kill them and proceed through the building.
Once you have entered the Terrestrial Complex, proceed past the rusted trucks and under the blue sign labelled "вход воспрещен" ("Off Limits" in Russian). Head to the left and towards the lockers behind the blue support pillars. The ghost is hidden within one of the opened lockers.
Follow the stairs up through the complex and into a large chamber.
Be aware of Stealth Vandals who will ambush you while concealed using cloaking technology. Kill the Stealth Vandals and then proceed into the large room to kill the remaining Vandals and Dregs.
Head towards the back of the room where you will find a Fallen terminal, deploy the Ghost to investigate.
While the Ghost scanning the Fallen tap, multiple waves of Fallen will be released in an attempt to stop you.