Isaiah 34

Night creature (screech owl) in this context certainly refers to 'some type of wild animal or bird', and appears to be related to laylah (meaning "night"). Some interpret it as the name of a female night demon, on the basis of an apparent Akkadian cognate used as the name of a demon. Later Jewish legends also identified "Lilith" as a demon.

You made Belial for the pit, angel of enmity; in darkness is his domain, his counsel is to bring about wickedness and guilt. All the spirits of his lot are angels of destruction, they walk in the laws of darkness; towards it goes their only desire.

in the War against the Kittim the Sons of Light face defeat three times before victory, but in the War of Divisions there is not mention of defeat or setbacks of any kind

These scrolls contain an apocalyptic prophecy of a war between the Sons of Light and the Sons of Darkness. The war is described in two distinct parts, first (the War against the Kittim) described as a battle between the Sons of Light, consisting of the sons of Levi, the sons of Judah, and the sons of Benjamin, and the exiled of the desert, against Edom, Moab, the sons of Ammon, the Amalekites, and Philistia and their allies the Kittim of Asshur (referred to collectively as the army of Belial), and [those who assist them from among the wicked] who "violate the covenant". The second part of the war (the War of Divisions) is described as the Sons of Light, now the united twelve tribes of Israel, conquering the "nations of vanity". In the end, all of Darkness is to be destroyed and Light will live in peace for all eternity.