Nice concept with a diverse cast that sounds genuine and lively. My only issue was the lack of tension in the final climatic battle and the poor planning (or rather, complete lack of planning) that the main characters carried with them into that final showdown. 
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 In the middle of the book, the author makes a point of how shadowscaping can be used in creative ways to arm yourself and give you situational awareness before a fight. But our heroine completely forgets about all of that, and goes in unprepared (no drawing tools), leaving the rest of her companions to fight reanimated zombies with their bare hands or whatever weapon they could pick up. She was lucky the villain was the obsessive intellectual variety and not actually one who knew how to start a war. 
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