To get into this instance go to 475, 25, -1589 which is just behind Soul Eater Falls.
When you enter this time enter Tombs of Night: Retribution (Bloodline Chronicles Adventure Pack is required for this instance)
IF YOU DO NOT ENTER Tombs of Night: Retribution you will not be able to do this quest.
1. Go to the base of the waterfalls (57, -41, 114) kill 5 different sets of vampires at the base of the
waterfalls. (The groups will be made up of any of these Neonate Satiator, A Neonate Seer, Neonate Slayer
Neonate Diabolist, Neonate Ravager, Neonate Vanquisher) They will all be on the same level as the bottom
of the waterfalls. When you kill enough of the sets, Dvith N`Zur will become attack-able. Kill him for the 1st
artifact.
2. Examine the rubble next to Nilth T'Feyd ( -99, -23, -12 ) to find the second artifact.
3. Examine a coffin slightly north of Nilth T'Feyd ( -102, -24, -27 ) for the third artifact
it is called "An Ornate coffin"
4. Kill Rhayn T'Dax ( 54, -23, -101 ) for the last artifact (in the tunnel between the first and second levels).
this gets you the 4th artifact.
5. Leave the instance and return to Dirin Thilae for your reward. (East side of Timber Falls ( 410, 26, -1484 ))