The death mechanics interest me. Looks like you carry a spare baby around with you at all times, and when you die you go into the baby and a giant explosion happens that "craters" that part of the game world. I assume that means making it inaccessible. It seems to be quasi open world, but with a directed narrative running through it. Time seems to be a big feature, and rain might have something to do with that. Timefall, etc. Seems to be stealth instead of combat, and suspense over action.
It gives me Silent Hill 2 vibes mixed with Silent Hills mixed with general Kojima craziness and MGS5, and that's a solid sell for me if that's what it really is.
I felt like this trailer actually gave away a lot more than the ones in past years, which were just "wow look at the goop and strangeness."