Ran through Zodiac Tournament and started Year of the Snake yesterday. I don't know what happened to me but I had way less trouble than Vinny did when Giant Bomb did their QL of Zodiac, I think I died exactly once--and that's despite the fact that I forgot half the moves, though knowing exactly what to do during the penultimate mission was really handy and probably saved me a lot of deaths. Took me about an hour. I'd call it skippable but for a buck it's not bad.
Year of the Snake is pretty cool so far, but I wish it made you/facilitated playing more like an actual police officer. For example, most of the time you'll end a mission without a car. You can't call in to get a police cruiser, so either you'll have to run all the way, find a garage, or commandeer someone's vehicle for "urgent police business," aka "I'm lazy and want to drive to the next mission like I have the entire rest of the game." I do like how United Front changed the animation for hijacking a car so you actually act like a police officer instead of a street thug, though (you actually stop and show your badge instead of opening the door and ripping someone out of the driver's seat).
It's also a little weird how you don't have a partner like most cops do. But I guess that would make it a more involved piece of DLC than Square Enix was willing to fund. Anyways, still fun, definitely worth two bucks!