For people who play video games, what was the most difficult game you played and what was the hardest boss fight you've ever fought?

I feel like COD MW2 2022 when you had to fight a character named Graves and he was in the tank (btw we later find out his wasn't in the tank in the next game 🫥) and yeah it was super hard to destroy the tank with C4 and I kept dying cause life is life.