Which video? The old E3 vid, yes. Not this new one though. This new footage is an artist's demo reel, and is clearly WIP work focussing on the game's animation. The animations are very good, but the transitions rough. My guess is what we are seeing is some Assassin's Creed type 'lots of capture sequences' for different situations, showcasing the artist's skills in character rigging and animation. The transitions weren't demonstrating any incredible blending, or any Naughty Dog style multi-part blending for variation, or any obvious sophisticated technique. The more complex sequences like the box-push could just be captures for a cutscene and not represent any behavioural physics or such. There's really not much to be gleaned about the game from this! The animation clips were each very realistic and with polish, could have been looked very effective, but that says nothing really of the rest of the game.