Continuity mistake: Jackie Chan fights the Indians in the stream. His clothes are soaked. But as soon as he is on the land to fight the others, his clothes are dry.
Continuity mistake: In the trailer, there is a scene showing Matt Damon in a fight. The other person pulls out a knife and cuts Damon on the right side of his face, leaving a big scar. In the next scene of the same commercial the scar changes from the right side of his face to the left side and then back again.