This is what happens when some writers insist on using everyday in place of every day…
In case you didn’t catch it, friends, everynight is wrong.
Every night, he could hear the howling of his old pack echoing over the cityscape, and he felt the urge to run wild, even if just for a short time.
I added he to the latter part of the sentence, making it compound, because the verbs (could hear and felt) seemed somewhat mismatched otherwise. Changing could hear to heard would serve the same purpose.
I’d recommend changing cityscape to just city unless the intention is to contrast it with landscape.