[Tom4784]

Mr. X is intimidating at first, he's potentially the scariest thing they've ever put in a RE game at first simply because you don't know the rules of how he works. I remember running through the police station to get away from him, almost screaming my head off at the unexpected horde of lickers and hiding in the dark room with my shotgun aimed at the door because I didn't know if Mr. X could enter save rooms or not.

When you know how he works though, it's just a matter of ensuring that you've cleared a route between the lever you need from the west wing to the library and then back to the basement.