The vampire in "Stalker 2: Heart of Chernobyl" is a very powerful monster in the game, and its power is mainly reflected in its abilities, first of all, invisibility, but it also has some limitations. First, they are not always invisible. In other words, if a vampire doesn't notice you, it will be seen.
What are the abilities of vampires in STALKER 2
A vampire's primary ability is invisibility, but it also has some limitations. First, they are not always invisible. In other words, if a vampire doesn't notice you, it will be seen. Second, they must be de-invisible when attacking you.
Similar to mutated dogs, vampires rely on quick surprise attacks to confuse you and deal damage. This, coupled with their ability to inflict high bleed damage, makes long-term battles with them unwise.
They also have a scream attack that slows and disorients you. They only use this attack when you are at a distance from them, and you can avoid their screams by staying still.