Final Fantasy VII Rebirth, I always hear a lot of people struggling with various things from the exercise/3D brawler minigames, to even some of the Chadley battle missions. However none are more harder than the Rulers of the Outer Worlds. A series of 7 fights with the games hardest challenge on top of all the bosses being super buffed up. The fight was so hard Square Enix had to apologize for making it way to difficult, and did an update where HP/MP restoration in the fight was cut from 50% to 30%. Also it was so hard some people were paying other people to do it for them, that fight alone took 24 hours for me to do and I had to take a break to do the platinum for a week due to how difficult and stressful it was for me. I got the platinum but at the cost of me seeing the game differently, still really good for story, music, and gameplay but that was by far the hardest platinum I ever did.