He certainly sounds like he's at the extreme end of the NPD spectrum. I would advise you to run ASAP. If you can't fully run now, avoid him whenever possible. If he works, parties, or runs errands at certain times, work around his schedule. Leave when he's home to go to a friend's or relative's house and stay home when he's gone.

And finally, as somebody who has NPD traits myself (although much more mild than his), I would advise you to never try to fight a narcissist or sociopath under and circumstance because you will most likely lose. People with these personality disorders lack the capacity for empathy or guilt which makes them much more ruthless of an adversary than most regular people can comprehend.

Don't even say anything that would threaten his ego because many narcissists can become dangerous if their ego is threatened. Avoid him until you can run, but if you must engage him in conversation, tell him what he wants to hear and nothing more. Otherwise, act like a rogue and stick to the shadows in order to evade him until you're far away in a safe place.