From a game I played:
None knew from whence they came, nor to whence they would go upon completing their terrible orgy of bloodshed. All that was known was that they came, and armageddon came with them. They killed everyone, and in unimaginably horrible ways. Ways that, even if they were imaginable, you wouldn't want to imagine them, believe me. Their rampage left the village decimated, and for generations the few survivors and their offspring could barely bring themselves to speak the name of that most terrifying of evils: "Puffin."
How would you translate it in your conlang?