Attacks from boss battles that always get you

When it comes to gaming, sometimes there comes a particular boss fight who can kill a player off guard with one tap because if a certain attack even slightly hits the player, it’s game over.

From what I heard about Malenia in Elden Ring is that she a very nasty attack that once it connects with the player, she can easily end the entire battle just with infamous fowl move as dodging it seebs very difficult from what I read about the boss fight.