Notes
The Nightstalker is a little bit stronger than a Necromancer.
Abilities
Melee (0-90) poisons you starting from 4hp, Holy Life Drain (87-170) Invisible, Haste, Paralyze, Creature Illusion changes appearance to Werewolf, Vampire Lord, Grim Reaper, Tarantula or Ferumbras.
Damage Taken From Elements
Location
Strategy
Don't let him get closer or he will use his strong life drain attack on you.
Knights should use full attack and kill them as fast as possible. Killing them before they get the chance to use their life drain attack can save you any means of healing at all, as their melee will often be weak. The many chances of getting rare items and high gold drop mean this monster can be hunted without a huge waste at lvl 60+.
Loot
0-105 gp, Shadow Herb, Crystal Ring (semi-rare), Protection Amulet (semi-rare), Platinum Amulet (rare), Strong Mana Potion (rare), Spirit Cloak (rare), Crystal of Balance (very rare), Haunted Blade (very rare), Chaos Mace (very rare), Boots of Haste (very rare).