I set out with an invisibility pot and two hatchets, hoping to sneak past the orcs and see what was past them.
It was very exciting to see the 80g spent pay off. I entered the cave being guarded.
By turning left I came here...
A very interesting place. He sells several things which are not available in the normal store.
Iron boots 60g
A shield of the bee 170g (though I've seen one in the normal store before)
Iron helmet 115
Fine axe 280
So if you have money to spend, but still can't kill orcs, it might be worth taking an invisibility-potion-fueled shopping trip.
I noticed that I could attack without the invisibility breaking. I didn't try hitting a mob, though.
Theres quite a decent amount of time before it runs out, about a minute or two. But you would certainly want to bring two for the trip and the return (or gold to buy a new one from Darklow). My potion ran out in the cave. Escaping was a hopeless idea.