knight, platforming, action, exploring, Junk Pit, Hollow Knight, dark atmosphere, eerie, underground, caverns, ancient structures, moss-covered stones, bioluminescent plants, challenging terrain, hidden entrance, Godmaster content, breakable wall, Royal Waterways, Dung Defender's arena, simple key, locked hatch, descent, ambient light, side-scrolling perspective, detailed textures, atmospheric shading, immersive environment.