This creature, despite it's lack of health, has deadly attacks which can deal enough damage to give you a free trip back to the Temple.
Damage Taken From Elements
A Sorcerer or Druid with 110+ level can use Energy Strike to solo a Spectre easily. Dwarven Ring is recommended, as it causes Drunkenness a lot (if you don't want to use it be sure to not to run in their Great Musical Bomb). Higher level Sorcerers (160+) can use Rage of the Skies to kill many at once as you can kill a Spectre by 2 hits. Note: it is posible to hunt them in inquisitions at level 110 as sorc if you get a friend making the hands runing away and clean the hffs. if you do so try only get 1 spectre and use normal energy strike. Really good exp and big profit is possible even at low level.
0-297 gp, 0-2 Blank Runes, Wand of Cosmic Energy, Lyre, Demonic Essence, Soul Orb, 0-7 Platinum Coins (semi-rare), White Piece of Cloth (semi-rare), Shiny Stone (rare), Great Mana Potion (rare), Silver Brooch (rare), Relic Sword (rare), Death Ring (very rare), Stealth Ring (very rare), Demonbone Amulet (very rare), Shadow Sceptre (very rare).