So I've forgotten where someone shared that video of the animations in the gameplay trailer being deconstructed (it's an hour long and it's great) but here it is again anyway:
The guy who made this video is actually a dev - he's the senior tech animator for EA motive and he
Tweeted saying "The thing to know about Naughty Dog gameplay trailers is the next day, every other developer in the world is frame-by-framing it, trying to figure out how the hell they did that."
Another dev
responded saying "Yeah I can explain a few things and how to do it. The thing here is that they are doing everything right and they are doing things that you wouldn't even consider doing. know of easy ways to do these things in scripted scenes... but a lot of that was not scripted."
That's some high praise.