Yeah I've noticed that. The game just keeps notching up the intensity for sure. I was in main hall putting stuff in that storage container and as soon as I backed out I heard the music. Sure enough there he was on top of stairs making a bee line straight for me.Yup that's him. Watch out for the lickers too. When you encounter Mr. X, more lickers come out to play. So far I've died 3 times trying to reach a safety point to save my progress, but these damn lickers get me every time. I have no choice, but to run into them because Mr X is on my ass. It doesn't help that I am out of ammo and first aid.
I had to step away for a bit and catch my breath. Lol