Continuity mistake: When Antonio Banderas is finally proficient at swordsmanship, he knocks Anthony Hopkins' sword out of his hand and catches it. He then laughs and throws it back pointing downwards, but when Anthony Hopkins catches it, it's pointing upwards. (00:41:00)
Revealing mistake: When Hunt is bringing the eagle egg to Shaquinna, he trips over a log and the egg goes spinning through the air, during which time you can see the wire that the egg is attached to. (00:59:15)