The trailer made this look like an action comedy heist movie, with zombies thrown in and set in Vegas for extra fun.
It is none of these things. Instead, it's a dull hour worth of plot stretched over way too long, with weird plot elements (that are never explained or add anything to the movie), tons of for-some-reason-topless-ripped-(occasionally-robot)-zombies, really wooden acting, bizarre blurry camera. Nothing in the movie is fun, the Vegas location is (apart from justifying an albino tiger zombie) one hundred percent irrelevant, the story is mostly a mash of other movies, with loads of Aliens 2. Only watch this if you want to have a new appreciation for Resident Evil movies, for some reason