I was puzzled by the credits being mostly Russian names. Then I realized this was a movie set in Russia that actually WAS shot in Russia!
So I say, cut it some slack. A stray thought-- the actors playing soldiers in the film probably WERE former members of the Red Army! They certainly had the moves. And the CGI serpents are pretty dang good! I was impressed by a couple of sequences. In one, the snake's underside reflects the light of the flamethrower being used (ineffectually) against it. The other nicely-done sequence is lifted from Gandalf's "death" in LotR: TFotR, with a serpent playing the Balrog role.
So I say, cut it some slack. A stray thought-- the actors playing soldiers in the film probably WERE former members of the Red Army! They certainly had the moves. And the CGI serpents are pretty dang good! I was impressed by a couple of sequences. In one, the snake's underside reflects the light of the flamethrower being used (ineffectually) against it. The other nicely-done sequence is lifted from Gandalf's "death" in LotR: TFotR, with a serpent playing the Balrog role.