Necromancer's Request

Talk to the Mysterious Wizard in Forest of the Dead . He stands at the teleport point from the gatekeeper from Rune Township. He will ask you to hunt vampires and the dead that appear at night.
It is necessary to hunt vampires and other undead in Forest of the Dead to obtain quest items: Vampire's Heart: Devil Bat (lvl
68) Atrox (lvl
69) All Vampires
Zombie's Brain: Corrupted Knight (lvl
63) Resurrected Knight (lvl
63) Corrupted Guard (lvl
64) Resurrected Guard (lvl
66) Slaughter Executioner (lvl
65) Guillotine's Ghost (lvl
67) Resurrected Guard (lvl
66) Ghost of Guillotine (lvl
70) Ghost of Rebellion Soldier (lvl
69) Ghost of Rebellion Leader (lvl 71)

When you collect 200 Vampire's Heart, return to Mysterious Wizard and receive a reward of 120,000 Adena. You can continue hunting for vampires by selecting the option "Say you'll go and bring more vampire hearts.". (Or simply by closing the dialog window)
You can exchange Zombie's Brain for the following materials at the rate: Mold Lubricant (Underworld Item
5) = 27 Zombie's Brain Enria = 32 Zombie's Brain Mold Hardener = 62 Zombie's Brain Adamantite Nugget = 13 Zombie's Brain

Vampire's Heart: Devil Bat (lvl
68) Atrox (lvl
69) All Vampires
Zombie's Brain: Corrupted Knight (lvl
63) Resurrected Knight (lvl
63) Corrupted Guard (lvl
64) Resurrected Guard (lvl
66) Slaughter Executioner (lvl
65) Guillotine's Ghost (lvl
67) Resurrected Guard (lvl
66) Ghost of Guillotine (lvl
70) Ghost of Rebellion Soldier (lvl
69) Ghost of Rebellion Leader (lvl 71)