I won't add too much as most things have been said however I will say it is the only game to have given me a proper nightmare!.
I was convinced a Regenerador was climbing in through my bedroom window as I could hear it breathing outside

I woke up screaming and threw open my curtains and my Mrs wondered what the hell was going on.
Just listened to it now and it still creeps me the hell out. Especially as initially you hear it off screen (after the first one you meet)
I have bought the HD version for PS4 and for some reason it made me feel very sick similar to what I have with VR. I played it up to the church bell and had to turn it off. I have not been back since. No idea if it is the closeness of the camera or the motion. Never had any other non VR game do this