The fight with the red-haired zombie is just like the fight between Jackie Chan and Ron Smoorenburg: the zombie and Ron only use their feet and legs and the moves are the same.
(SPOILER) Both movies have an exact same scene. A hero who is hiding in a building that is occupied by bad guys accidentally runs into their unarmed boss, who then tries to save himself by pretending to be a good guy also. The hero gives his gun to the bad guy who then tries to shoot him, only to notice that there are no ammo.
The moment where Jared Robinson grabs his own foot and lifts it above his head was inspired by a similar moment by Ron Smoorenburg in the Jackie Chan movie.
