why this platinum is a 10/10 difficulty. What makes it so challenging is that you must gain S-Ranks on Hell and Hell difficulty. Hell and Hell difficulty means you die in one single hit while enemies have the same amount of health as in Son of Sparda (which is 4 times the health they have on Human difficulty). If you take only a single hit it will void the S-Rank since you lose the no-hits and no-continues damage.
Infinite Devil Trigger unlock because it reduces ranks by -80% and makes S-rank unobtainable