I am exploring the forbidden example cave of doom. I find, among squillions of baddies, a shopkeeper, who just happens to sell stuff inside a deadly cave where nobody goes. Weird. I accidentally cause him to be angry, and he turns out to be more powerful than literally every monster in the game. Messed up.
So here’s two questions for you: How can you justify a shopkeeper in the example cave of doom just happening to be there waiting for random adventurers to buy stuff,
and,
Is there a better way to discourage stealing stuff or killing the shop-keep’ than just making them pummel you with ridiculous power?
Side note: Bonus points for linking these, explain both why and how he would be down there, in the example cave of doom, surviving without a monster sword or magic to pwn things with, and why it would be a bad idea without him possessing those things, to fight him.