Goofs

Snake Facts: The Ural mountains where the snake is reported to be at the beginning of the movie run as high as 6,700 feet in elevation and are cold. Pythons on the other hand are ectothermic, meaning no heat from within and dependent on their environment for heat. Prime heat range for pythons being 76-88 degrees F. Finding a python in the Urals would be limited to finding a dead snake.

Pythons like most snakes do not make a "screeching" sound. At most they might hiss.

At minute 28:30, an 85 foot snake does not fit in a 10 foot box.

The Russian soldiers in the opening sequence do not have consistent, or authentic, Russian accents.

At 1:11:44 Stoddard racks another round into the pistol he is carrying and handing to Nalia. That pistol had a round in the chamber when it was handed to him by Crawley and would also have automatically loaded another round when Stoddard fired a warning shot at Zubov. There was no indication of a round being ejected when Stoddard racked the new round in.