Audio problem: Just after the long continuous fight scene in the restaurant, one girl pulls out a knife to attack Tony Jaa. The knife makes a sound like it's being pulled from a sheath but it's not touching any other metal.
Audio problem: Right at the end of the fight in the warehouse, when the quad bike covered in metal studs comes out; Tony Jaa tricks it by running up the glass wall and back flipping over it. His left foot touches the glass wall twice between shots and there is the sound of three steps on the glass.
Visible crew/equipment: During the fight in the warehouse, when the guy is chasing Tony Jaa on the scrambler bike, he performs a back flip from one ledge onto another. You can see the crash mats below him in case he falls.
Continuity mistake: Tony Jaa is stabbed during the scene where he breaks 50 guys' bones. In the next scene which takes place, he fights 3 giants, and during that sequence, he takes off his shirt. Somehow, the stab wound has magically vanished.