All we know is that it had a bunch of patients being mowed down and blown up in what looks like a hospital. It ends with a close-up on some dude who had a hook hand and kinda looked like Snake from Metal Gear Solid. We'll update as soon as we figure this out.
Update: Check out the trailer yourself just beyond the break!
Update 2: Sadly, this trailer's been pulled. We'll update this post (and the rest of our VGA 2012 posts with video) as soon as it's back up.