The clattering of broken iron chains grinding over the earth and a maddening howl sound, when terrible Cerberusses siddenly appear like black phantoms. Bristled up, the fangs bared and the eyes burning woth hatred, these infernal hound are ready to assault and tear to shreds everyone who tries to stand in their path. There is but one way to stop them, and this is by killing every single one of the creatures!
Bolded word should be "suddenly".
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