The Haunted achievements wants you to
Meet the following ghosts:
- Lucious the Depraved
- Dataminer
- Drury Brown
- John Gorham Coffin
- Fecklar's Ghost
- The Archivist
- The Tomekeeper
Where are these ghosts located?
Diablo – all the ghosts for Haunted
diablo-3
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Best Answer
There is a pretty good guide over at d3db here. It includes a spawn point strategy for farming the Act I ghosts. The diablowiki also has a concise listing here.
Lucious the Depraved - a unique Grave Robber - found in Cemetery of the Forsaken - Act 1
Dataminer - a unique Ghastly Gravedigger - found in the Defiled Crypt - Act 1
Drury Brown - a unique Ghostly Murderer - found in the Defiled Crypt - Act 1
John Gorham Coffin - a unique Grave Robber - found in the Defiled Crypt - Act 1
Fecklar's Ghost or see also here - Unique Enraged Phantom- Festering woods - Act 1
The Archivist - Unique Grim Wraith - The Unknown Depths - Act II
The Tomekeeper - Unique Grim Wraith- Realm of Shadow - Act II