role-playing game (RPG) style fantasy epic battle scene, in a  mountainous canyon with a stream in the bottom, massive beast, attacking a group of knights, weapons, swords, shields, knights defend themselves against the creature's fierce attacks, lush forest with a dramatic waterfall in the background, knights' armour is intricate and detailed with intricate engravings and colourful banners, beast's eyes glow with a fierce determination, beasts massive form a contrast to the knights' disciplined formation. style of Greg Rutkowski, style of Peter Mohrbacher, style of Thomas Kinkade, . detailed, vibrant, immersive, reminiscent of high fantasy RPG games