It looks to me like it has a stump for a left arm. If so, that is some originality to create a fighter who is obviously battle worn. It sure gives some 'authenticity' to the characters, doesn't it?
Yes, the creators and PJ are doing a fabulous job on that account.
This orc looks very authentic indeed, and very angry, too. He looks like he really has an axe to grind, or would have if he had an axe;^)
I think Gimli has one in mind for him....