cross-platform, Cold War, zombies, multiplayer, cooperative gameplay, diverse characters, military outfits, armed with guns, survival, abandoned facility, eerie atmosphere, dim lighting, 3/4 view, action-packed, detailed textures, realistic materials, dynamic shadows, intense expressions, strategic positions, teamwork dynamics, immersive environment, console and PC compatibility, online connectivity, seamless interaction, high-resolution textures, HDR lighting, wide-angle lens.