puzzle-solving, cooperative gameplay, two players, medieval castle, intricate mechanisms, cryptic symbols, ancient artifacts, teamwork, communication-based challenges, torch-lit stone walls, heavy wooden doors, rusty levers, worn-out books, dusty shelves, echoey halls, ambient sounds, immersive atmosphere, escape room concept, challenging riddles, logical thinking, problem-solving, interactive environment, detailed textures, atmospheric lighting, first-person perspective, split-screen, real-time collaboration, voice chat necessary, cold breath visible, eerie shadows, suspenseful music, time pressure, historical setting, advanced puzzles, mechanical locks, hidden compartments, teamwork coordination, high-resolution graphics, ambient occlusion.