ravenholm, Half-Life 2, abandoned town, eerie atmosphere, decaying buildings, overgrown vegetation, headcrab zombies, Father Grigori, shotgun, traps, physics-based puzzles, dark, foggy, moonlit night, tense ambiance, rusted metal textures, wooden structures, broken windows, scattered debris, survival horror theme, flashlight illumination, dynamic shadows, immersive environment, 3/4 view, detailed textures, atmospheric lighting, desolate, post-apocalyptic, video game setting.