Continuity mistake: When the Siamese fighter (Chris's old friend) is defeated by the Mongolian fighter, Chris wipes the blood from his friend onto the Mongolian fighter. When he wipes the Mongolian, no blood is there. The blood does not appear on the Mongolian until Chris is walking off.
Other mistake: The Mongolian guy is supposed to be knocked out cold - however, he appears to smile upon being knocked down.
Other mistake: When Van Damme is in the hold of the ship the ship is under attack. Between the fight scene we can clearly see Van Damme standing on the right of the screen and watching. In the next shot he is coming out from the hold of the ship.
Riggi: Hey, clown boy! Get off my street.
Christopher Dubois: Wait a minute.
Riggi: Hey, Dubois, what are you sick in the head or something? Please, grow up, go get yourself some new and nice clothes and come to work for me.
Christopher Dubois: I don't work for nobody.
Riggi: It's too bad, Dubois, it's too bad, you're a wasted talent, but nuts case, you know that. Suit yourself.