Flipped shot: the large cut Lawson inflicted on the Queen moves from the left side of her chest to the right side.
The Alien Queen's big chest wound changes from the right side to the left side of the chest two times during the final fight.
In many scenes, when a character is killed by a blade then seconds later a closeup of the injury shows a wound that didn't bleed very much and indeed has already coagulated and mostly dried up.
Obvious flipped shots and repeated footage throughout final fight scene.
A stone statue of an eagle is moving in the wind, so it clearly reveals its polyester nature.
During the final fight with the female baddie, it is on several occasions obvious that she is replaced by a stunt woman. The stunt woman is even Asian (which the character is not).
Obvious double for the dark-skinned female baddie just before she hurls the heroine through a couple of walls.
A massive pillar lands on top of the dark-skinned female baddie. In the close-up it lands on top of her with all the force of a strip of polystyrene.
There are numerous scenes where it is obvious Steven Seagal's voice has been dubbed over with another person's voice. If you look closely his lips do not even match the audio.