The nun herself is the scariest element. Her appearance, with a pale face and a menacing look, is quite terrifying. Also, the way she moves silently around the place.
In the evil nun horror game story, the nun is often depicted as a terrifying figure. Usually, the player is trapped in a spooky place like an old, dilapidated school or convent. The nun patrols the area, and the player has to hide from her to avoid being caught. If caught, it might lead to some sort of 'bad end' for the player.
In The Nun 2, the plot likely builds on the previous installment. There could be deeper exploration of the nun's background and her sinister influence on the characters. Maybe new locations and characters are introduced to heighten the tension and horror.
The story of the nun often involves elements of mystery, spirituality, and sometimes horror. It might center around a nun's experiences, challenges, or supernatural encounters.