Damnation

Complete the following achievements to unlock Xbox Live Gamerscore points.

Enter LockNLoadAll as a code at the "Unlockables" menu.

Enter BlowOffSomeSteam as a code at the "Unlockables" menu. The weapon is a gun with a blade attached to the bottom of the barrel that kills in one hit.

There are a total of twenty emblems.

Arrowtree
On the ground floor of the buildings in the back of where you fight the first set of enemies.

Boomtown
In the mines, on the second floor of the house after you climb up the chain holding a large crate or the series of wooden molding.
Once outside, in the single story building near the billboard that is shot down before the second driving sequence.
At the back of the domed structures before taking the zip line to the roof near the conveyor belt.

Mesa Dorado
After dismounting the bike at the end of the first driving sequence, inside the building to the left before climbing onto the plateau with the artillery.
After the second driving sequence, on the ground floor of the tall building to the left when overlooking the next area from the top of the canal wall.
Once in the interior, on the ground floor of the building after the ladder beside the waterwheel and before the rope bridge.
To the right of where you start the turret fight with Selena.
Once outside again, on the second floor of the building on the right, inside the cavern after the gondola.

Convoy Chase
Halfway through the driving sequence, after dropping the totem segment onto the bridge, located behind the totem pole to the left after driving up the newly made ramp.
Once outside, near the back side of the area with the square pools and four lantern holding statues (after the spiral staircase and before the gondola).
During the fight with Dayden, on the second floor of the building in the middle of this area.

Terra Verte
To the left of the statue before entering the city gates.
On the way to the top of the governor's mansion, inside the floor where the metal stairs begin. Go to the left of the building near the windows.
In the glass building opposite the Waterworks building.
Once inside the Waterworks building, on the ground level opposite the entrance to this building.

PSI Complex
At the end of the driving sequence, to the right of the elevator.
After walking up the conveyor belt, in the second floor of the building to the left after the ladder.
Once inside the base of Prescott's tower, behind the elevator.
After exiting the elevator into the fight with Prescott's, inside the smaller building to the right.

Boiler Room: An Arrow rifle can be found bottom middle on the boiler.
Broken Home: A Revenant gun is located on the middle bridge.
Cathedral: A Revenant gun and grenades are at the bottom middle of the map.
Cave In: Check around the platforms in the middle of the map to find an Arrow rifle.
PSI Topside: There are sniper rifles hidden around the map.
Shaft: Battle to the bottom of the map to obtain a Arrow rifle.
Shaman: Look around the center totem, there may be something hidden in the tall grass.
Town Hall: The bridge below the roof gap has a Revenant gun.

Enter in the unlockables menu:

Complete the following achievements to unlock Xbox Live Gamerscore points.