Your dream is rich with symbolism and seems to reflect deep-seated fears, feelings of entrapment, and perhaps a struggle for survival in a challenging environment. Here's an interpretation of the key elements:

1. Demon and Punishment: The demon may represent internal fears or anxieties that feel threatening or punishing. The mention of eating human flesh could symbolize feelings of being consumed by fear or guilt, suggesting that something in your life feels overwhelming or destructive.
2. Abandoned House: This setting might signify neglected aspects of your life or psyche, indicating that there are unresolved issues or feelings that you are avoiding.
3. The Dead Body and Crying: The imagery of the half-eaten body and the person crying may reflect feelings of helplessness or despair in facing a situation. It might also symbolize parts of yourself or your life that you feel are being neglected or harmed.
4. Railroad or Mini Coaster: This could symbolize a journey or a path you are on in life. The fact that the track stops may indicate a feeling of being stuck or that you have reached an impasse.
5. Escape and Water: Jumping into the water and swimming might represent a desire to escape your fears or the situation you find yourself in. Water often symbolizes emotions, and your struggle to navigate through it could signify the emotional turmoil you are experiencing.
6. Ropes and Drowning: Your internal thought about drowning suggests a fear of being overwhelmed by your emotions or circumstances. The ropes may symbolize the ties that bind you to those fears or situations.
7. Hanging Figures: The two people hanging themselves could represent the consequences of fear and despair. Their actions might reflect your feelings about others who are also struggling or the impact of your escape on those around you.
8. Tall, Frizzy-Haired Lady: This character could symbolize creativity or an aspect of yourself that is unique but perhaps feels out of place. Her claim to be an author might suggest a desire for expression or the need to tell your story.

Overall, this dream appears to delve into themes of fear, survival, and the quest for freedom from oppressive situations. It may be beneficial to reflect on areas in your waking life where you feel trapped or overwhelmed and consider ways to address those feelings. Exploring your creativity, like writing or another form of expression, might also provide you with a sense of relief and clarity.