Revealing mistake: When it shows the guy who had his arms blown off when he isn't wearing fake arms, his body is obviously wider, indicating that he hid his arms under his shirt.
Continuity mistake: In the first sequence, when Victoria Dahl falls from a cliff, several shots show her from above and from the same level as she clings to Dick Steele's hand and starts to fall, then a last shot shows her from below as she wags her arms in an attempt to reach the water safely. In the first shots she is wearing sandals, whereas in the shot from below she (perhaps a stunt-woman) is wearing closed shoes.
Dick Steele, Agent WD-40: You carry a UB-21 Schnauzer with a Gnab silencer. That's KGB. You prefer an H&K over an A.K. Your surveillance technique is NSA. Your ID is CIA. You received your Ph.D. at NYU. Traded in your GTO for a BMV. You listen to CDs by R.E.M. and STP. And you'd like to see J.F.K. in his BVDs, getting down with O.P.P. And you probably put the toilet paper back on the roll with the paper on the inside.
Trivia: When Dick Steele rides the horse into the elevator, the two people already in the elevator are Loren Janes and his wife Ginger. They both appeared in the movie "True Lies" which is parodying the scene portraying the same couple in the same situation. Loren Janes even provided the stunts for this movie too.