Anomaly is a standalone S.T.A.L.K.E.R. mod powered by an x64 version of the X-Ray engine. Starting with version 1.5.0 Anomaly uses a custom engine build called the XRay-Monolith engine. After almost one year of development of the Anomaly 1.5.0 update, the mod continues its way on expanding and adding new features while maintaining a high level of quality and replay value.
Bloodsuckers are a terrifying creature but the combat sounds they make in the Stalker games simply don't stand up to the other creatures. So I fixed it.
I went ahead and replaced most of the Bloodsucker sounds with the sounds of Dying Light's Hunter zombies. In my opinion this is MUCH more fitting for the vampiric monstrosities.
1: unzip file
2: drag gamedata folder into main Stalker Anomaly folder (there should already be a gamedata folder)