Spare him

You offer him a hand.

"You fought well, orc and you admitted my superiority: you have my respect."

He opens his eyes wide and looks your hand. He grabs him and stand up.

"It was your right to humiliate me, but you chose to show me your respect. I will always remember this" He shakes your hand. "My name is Gmor. Remember it: if you will call it three times in moment of need, I will come to repay my debt."

"I will remember it."

He smiles and move a step back.

"Move on, human: you earned your right to pass. Be careful: in this dungeon there are things more dangerous than a orc."

"Nothing I can't fuck my way out" You say, moving past him. "See you around, Gmor."