Watch the 17 minute gamescom demo for MGS 5: The Phantom Pain
Below is the gamescom demo shown during the Metal Gear Solid 5: The Phantom Pain live stream. Just the game bits, not the entire stream.
It's the same demo shown during E3 2014, but as Kojima notes, the enemy AI has adapted to the last playthrough, and bow wear helmets.
This is because last time out, a lot of headshots were pulled off.
There's more cardboard box action, hiding in a dumpster, sending a poor goat flying through the air in a parachute, and your horse stopping to do its business along the way.
Thanks go out to YouTuber MKIceAndFire for this.