Why is Dark Souls 2 rated for teens?

Why is Dark Souls 2 rated for teens? The ESRB summary for the original notes “slashing sounds, cries of pain, and large splashes of blood,” “instances of dismemberment and decapitation” and “zombies, demons, giant spiders, and other fantasy creatures.”

The ESRB summary for the original notes “slashing sounds, cries of pain, and large splashes of blood,” “instances of dismemberment and decapitation” and “zombies, demons, giant spiders, and other fantasy creatures.”