knight in armor, summoning sign, glowing rune, dark fantasy setting, misty forest, ancient ruins, dim lighting, torches, co-op gameplay, multiplayer interaction, ethereal figures, spectral warriors, ghostly allies, medieval weapons, chainmail, steel gauntlets, full helm, broadsword, shield, combat stance, ready for battle, eerie atmosphere, ambient occlusion, high dynamic range, detailed textures, 3/4 view, action pose, dynamic composition, soft shadows, volumetric fog.