Can Cause Fear: This unit frightens all enemy units, reducing their leadership when nearby. It is also immune to fear. Fear penalties do not stack.
Hide (forest): This unit can hide in forests until enemy units get too close.
Undead: The unit is Undead (does not rout, immune to terror, becomes unstable when is low).
The Konigstein Stalkers (Skeleton Warriors) is a Vampire Counts melee infantry unit. Though most Undead are no more than stumbling thralls, these warriors have achieved renown due to their effectiveness in melee.
Beneath the mud lie the grave-stained bones of bitter, ancient warriors. Long held beneath the earth, they are clad in their corroded armour, their lifeless hands still gripping the swords, axes, spears and shields they held in life. Provided their remains have not been blessed by the rites of Morr, a Necromancer or Vampire can use the coiling energies of Dark Magic to instill a semblance of life and a flicker of spirit into these dormant warriors. As the regiments of past massacres claw their way to the surface, their empty eye sockets glow with unholy power. Silently, they gather together in a semblance of their old ranks, mutely awaiting the commands of their new lord as the remains of their tattered banners flap in the unnatural breeze of their creation. Lipless horn blowers raise their instruments and sound a spectral, mournful dirge.
Vastly upgraded Skeleton Warriors with Poison Attacks and improved armour. With 60 armour and improved melee stats, they become a decent melee combatant, poison serves to drag their opponent down to their level. The unit functions similarly to King Nekhesh's Scorpion Legion (Skeleton Spearmen) on the Tomb Kings roster. They are honestly more comparable to Grave Guards than regular Skeleton warriors, but don't cost nearly as much.
Named after a long-forgotten king, Konigstein has sunk under the weight of the ages and is little more than a set of abandoned ruins. It is here that the Necromancer Helman Ghorst dwells (in the book Sigmar's Blood). This suggests that these Undead warriors are the guards and soldiers residing in this tower employed by Ghorst.