plague doctor, medieval setting, rats swarm, dark atmosphere, torchlight, stealth action, protagonist siblings, historical fantasy, worn-out clothes, leather boots, chainmail, hooded cloak, distressed expressions, gripping adventure, dilapidated buildings, cobblestone streets, eerie moonlight, tense atmosphere, dynamic shadows, immersive storytelling, 3rd person perspective, atmospheric lighting, cinematic angles, high-stakes gameplay, survival elements, emotional narrative, rich textures, detailed environment, interactive objects, ambient occlusion, volumetric fog, realistic materials, gripping soundtrack, heart-pounding moments, brother-sister bond, character development, moral choices, poignant scenes.