Here is the full list of all 40 Running Shadow achievements.
Run 1000000 meters
Complete 500 missions
Kill Kurush, son of the Old Ones.
Complete a heroic mission in the Magic Library.
Catch the traitor in the Fraternity of Shadows.
Kill Ecrin the Bonecrusher.
Complete a heroic mission in the Prison of Despair.
Kill Commander Gremar.
Complete a heroic mission in the Fraternity's Lair.
Complete a heroic mission in the Lower City.
Complete a heroic mission in the Upper City.
Complete a heroic mission in the Bandit Lair.
Kill 500 Nephilims
Complete a heroic mission in the Sewers.
Clear the Sewers of Hadrion.
Destroy Kievran the Killer.
Kill 1000 enemies
Kill 200 Nephilims
Complete 100 missions
Complete a heroic mission in Claehra Maertock.
Kill 500 enemies
Run 50000 meters
Kill Char the Drifter Prince.
Complete your Fraternity of Shadows training.
Collect 10000 coins
Kill 30 Nephilims
Complete 50 missions
Complete a heroic mission in Ursa's Castle.
Kill 3 Nephilims
Kill 100 enemies
Run 10000 meters
Complete 10 missions
Collect 1000 coins
Kill 10 enemies
Run 1000 meters
Collect 250000 coins
Collect 500000 coins
Kill Arresh Naggar.
Rid the Upper City of zombies.
Complete a heroic mission in the Temple of the Azures.