You can't let your guard down. Take a cue from your badass gram. Get a a "dirty harry" kinda gun, idk what it is 357? Get another powerful handgun that holds more bullets, and a cpl shotguns, with lotsa ammo. Have them around the house. Always carry one on you. Of course,learn how to shoot & clean them. It stopped him b4, not permanently, but long enough. Then cut his efffing head off when he's down. Sounds like a Michael Myers type to me