During the brawl between The Doctor and Goth, both are visibly using stunt doubles in all shots which weren't a close up on their faces. The doubles faces are seen repeatedly throughout the fight.
When the hunter is looking at his map, his bandoleer of cartridges is shown in close-up. The shells clearly have no primers, meaning that (in real life, though perhaps not in the virtual reality the scenario takes place in) the shells would be inert and therefore useless.