A young and strikingly beautiful girl with cascading burgundy hair stands poised in intricate combat armor, gripping a mesmerizing and formidable melee weapon. Her face exudes elegance yet carries an unsettling and lethal aura, exquisitely detailed to capture every nuance of her expression. Rendered in sharp focus, this ultra-realistic concept art presents a full-length portrait in stunning 8k resolution, enhanced through octane render technology. The scene is set in a landscape orientation, seamlessly blending elements reminiscent of Artgerm's dynamic style, Greg Rutkowski's rich textures, and Alphonse Mucha's ornate elegance, all brought to life within the intricate world crafting of Unreal Engine. The image captures an ethereal yet intimidating presence, delivering a visually captivating masterpiece.