That looks badass. It's like that old Shadow of the Colossus video where several guys take down a giant beast together.
I wonder how they'll balance it for melee players. Like, that hydra battle video just has a wuss with a bow in the back, then eventually some dude runs up and starts climbing its body. But if it's like SotC, do you just go after its weak spot and it has a crazy huge life bar? I can't watch the interview now but the game looks interesting.