This trailer offers footage of animations created for Aliens Crucible, Obsidian's cancelled Aliens RPG that was un development for a while under the working title of, yes, Aliens RPG. The clip was posted about a month ago by Danny Garnett to show off his work on the project, and discovered by DSOGaming (thanks OXM). The clip shows walk and attack animations for several Xenomorphs, including a queen alien and a dog alien, as well as a scene showing some environmental physics and some motion capture for human soldiers.