Arvin changed his clothes and hide his face behind a black mask. He did this in case the old man makes a run for it. Arvin will of course have followed him to the depts of the hell. But when Old man attacked Arvin straight on, Arvin started feeling that maybe this old man is all power and no brains. Because he really attacked a guy straight on whose strength is unknown. That old man must have gone senile or something.
But Arvin didn't care. He picked the man's corpse and put it in his inventory. Then he got out from there. When Arvin had chopped off the old man's head, a lot of blood came pouring out of his body. Arvin didn't have time to clean all that up. So he took the corpse and get the hell out of there. This way the guards will have no way to check whose blood was that. It was a good thing that this world did not DNA recognizing technology.
