A frantic, handheld camera POV follows a berserker knight, covered in mud and blood, smashing through the wooden gate of a burning castle fortress. The camera is jostled as he brutally cuts down three chain-armored soldiers with a massive two-handed axe. Sparks fly as the axe strikes steel. Gritty realism, intense volumetric smoke and fire effects, 4K film grain. Audio: Roar of fire, screaming, deep battle horn, wet, sickening thud of the axe.