The Great Wall plays like a more colorful, movie-length version of The Battle of Helm's Deep from Lord of the Rings: The Two Towers before dovetailing into a muddled third act relying on the ole "kill the queen, kill the army" sci-fi trope. Oh, plus, Matt Damon's around shooting CGI arrows and speaking in one of the strangest movie accents (Is it Irish? Spanish? Just a gruffer version of his normal speaking voice? All of those ...