Cinematic Medieval Warrior Battle Sequence

A cinematic video prompt describing an original mature male warrior in heavy steel armor on a muddy battlefield. The sequence features intimate close-ups of his helmet, first-person POV through eye slits, and a detailed battle against mounted attackers using a flail and a polearm. The style is hyper-realistic with a focus on physics, atmospheric fog, and ultra-slow-motion movements, emphasizing the weight and inertia of the armor and combat actions over 20 seconds of screen time.