
These tell the horrifying story behind Paz and Chico's treatment under Skull Face, and they also talk about how Snake still believes in Santa Claus.

There are a million different things to collect in Phantom Pain, but the collectibles that have the most narrative impact are the Cassette Tapes. There truly are many, many ways that the AI in Phantom Pain adapts to the style of the player in what the game calls the “Revenge System.” The biggest mistake players make in their first playthrough of Phantom Pain is not adapting to the AI's adaptation. Players who use any form of smoke/sleep gas will find that enemies with gas masks show up to ruin their day. Players who nail the sneaking around aspects of MGS5 will find that bases start installing more cameras, mines, and even decoys the longer they go unnoticed Players who focus on headshots will find that soldiers start popping up with helmets on more often The best example is the reactive AI in Phantom Pain, which actively keeps track of the players most commonly used methods, and adapts accordingly: It's part of the reason why even the first game still holds up to this day. MGS5 is no different, but a lot of these systems actually apply to gameplay this time around.

Kojima's games are always chock full of insanely neat yet massively unnecessary systems such as the melting ice cubs all the way back with Metal Gear Solid 2.
