Fans of fast-paced action and gritty anime aesthetics have something new to keep an eye on. Belgian solo developer DascuMaru has officially revealed RUIN: Beast City, a boss-rush action game dripping with violent anime influence and unmistakable ‘80s flair. Better yet, players don’t have to wait long to see it in motion — a playable demo is available now ahead of Steam Next Fest. In RUIN: Beast City, players step into the role of Adama, a lone assassin tasked with hunting down a secretive cult of immortals known as the Lunatics. Armed with a katana and a revolver loaded with…