Complex sentence: John finds an entrance-way to find his son, and wanders through a room of red balloons, swings, a hallway of mirrors, and eventually to a recreation of his bathroom where he slit his wrists.
Split into simpler sentences: John finds an entrance-way to find his son. He wanders through a room of red balloons, swings, a hallway of mirrors, and eventually to a replica of the bathroom where he slit his wrists.