Audio problem: At the end the soldiers can be heard cheering and clanking their gear, yet they're all kneeling motionless.
Continuity mistake: Just before the armor, helmets and weapons designed by Hercules for the army are delivered and first announced, you can see the warriors in training already wearing and using them in the background.
Continuity mistake: Hercules is bitten on his right shoulder by wolves towards the end. As they escape the dungeon the bites can been seen on that shoulder throughout. But as soon as they escape the bites are no longer there.
