The writing is so evocative! Unfortunately, the images are not loading for me. Let's make sure the relative paths and the name files are all spelled correctly. Now, I've seen this setting before in games (going to hell, surviving the monsters), but that doesn't mean it has to be a cliche. Think of these questions:
- Is Hell, and the besties therein, a metaphor for something else? What is it? That will help you guide next steps
- What are the actions and ideas you wish to reward in this game? Players who do what gain what?
- There are many "hells", according to different traditions. Each presupposes a set of morals. Maybe do some research and see what hell implies in different religions?
Hope this helps! :)