Metal Gear Solid Delta: Snake Eater is a pretty faithful remake in almost every aspect, but there are some things that Konami has changed to fit in better with today's modern gaming landscape. For example, the game will offer players a "New Style" of controls, which ditches the original game's top-down view and original controls for a more modern third-person perspective.
People who have played the original will know that wrestling with the game's kind of dodgy controls was where a lot of the difficulty came in, and swapping to a more modern perspective could have potentially made the game a lot easier. Thankfully, it seems as though the developers were thinking way ahead of us, and have actually made it so the difficulty changes depending on your control scheme.
In a new interview with Famitsu (translated by Eurogamer), producers Noriaki Okamura and Yuji Korekado talked about the challenges of implementing this new camera perspective while keeping the game's difficulty intact. They apparently found that the difficulty of the game changed dramatically when the third-person camera perspective was introduced, so they decided that separate difficulty levels were the answer.
That means that if you go for either...