My rarest platinum is The Last Of Us remastered. It’s definitely so rare because of the online multiplayer and NG+ trophies, but it was never a boring grind to do these things for me.

The hardest platinum in my opinion was Bloodborne. I’ve platted most of the souls games but BB was the hardest because of the chalice dungeon bosses.

The longest grind I’ve ever done for a Platinum was Death Stranding Directors Cut. Popped the plat at about 170 hours and was kinda upset there was nothing left to do because I loved the game a lot.