There are 6 treasure maps in Stygian City. The first 3 maps can be found at Tungsten Port and the other 3 maps can be found at Stygian City underground.
Treasure Map and Dig Locations at Tungsten Port, Stygian City
Nautical Logbook
Map Location: Quick travel to the Ark at Tungsten Port, Stygian City and make your way to the weapon store (2nd store on your left towards the east of The Ark signboard)
Dig Location: Head to the pier and locate a docked boat. Look for the tyre on top of the boat.
The World in My Eyes
Map Location: Locate the Fallen Piece of Paper on the ground on the marked location.
Dig Location: Go to the Arcade store and locate the box next to a chair where a man was also lying down next to it.
Timesheet
Map Location: Speak to a drunken Scavenger by the pool table at the marked location. Give him Honey Orange Tea (Cooked with 4 lemons) and you’ll receive a treasure map.
Dig Location: Quick travel to The Ark. Run up the stairs nearby to 2nd floor, all the way past the pub. When you reach the end, turn right and you’ll see a round entrance on your left a little further up. Go inside and turn to your right, left and instead of going down the stairs, walk on the ledge towards the ventilation fans and you’ll spot the tyre.
Treasure Map and Dig Locations at Underground Tunnel, Stygian City
Leaky Water Pipes
Map Location: Go to the marked location and you’ll see a construction stop sign. Go around it behind the boxes and you’ll spot a safe.
Dig Location: This is located near where you’ll find the “Prince’s Adventure Log” treasure map. You’ll see a Scavenger standing there. Above him is where the dig location is. You need to take the stairs up and go around it so you can jump onto the pipe. You’ll spot a tyre.
Degenerated Wings
Map Location: Go to the marked location and locate a backpack lying on the ground. Be careful not to alert a huge monster in that area.
Dig Location: Quick travel to the Hub and make your way to the marked location. Locate the tyre. Be careful of the monster rats.
Prince’s Adventure Log
Map Location: Talk to the Scavenger an give him a full-grain animal hide in exchange for the map.
Dig Location: Quick travel to Emergency Exit 1. Head into the door and make your way up the ladder. Go around it and you’ll spot a pile of rocks next to a shut metal door.
