He can build himself a panic room. Then stay in there for a week until he is sure they are gone.
You know, violent crimes dropped dramatically when Texas started giving just about anybody who wanted one a concealed weapon permit. Also, you don't hear about tourist in Florida getting killed, raped, and kidnapped anymore. You just tell them you are a tourist and they ask how many concealed permits you would like.
It is human nature to fear the unknown. If you don't know if a guy is packing, then you probably will think twice about screwing with him. If MC comes off the trail with a big Desert Eagle strapped to her leg, I would think the hooligan would choose to pick another victim.