In Mesopotamian demonology, Lilin were hostile night spirits that attacked men. They had less power than gods. This was also the Hebrew word for both the succubus and incubus spirits of other legends as a single concept. This word, however, only included the sons and daughters of Lilith or a Lilith-like creature.
In Jewish mythology, Lilin is a term for night spirits. Lilith and her children, the Lilim, are considered to be night spirits.
Similar to other lady bats of her kind, Lilim soars through the sky with great agility and bears a circle of five energy rings around to protect her. After making a few swoops, she will send forth these rings toward Nathan, which will track him down for a while and then return to her.
She drops the Dark Armor, a cursed chest armor piece which although it doesn't provide any special defense against Darkness attacks, it's nonetheless one of the best defensive armors that can be found in the game.