I'm trying to brainstorm a pen and paper rpg where you play as homeless people in the dystopian near-future of West Coast City

The main enemy, of course, is other homeless people. How do you survive wiith the police having all quit and moved to the suburbs, the Ivory Towers and gated communities protected against the rampaging hordes of drugged-out lunatics high on drugs that give you superpowers, the churches and synagogues having all closed down because West Coast city is now 99% atheist, government services being a scam, and most remaining ethic enclaves patrolled by armed psychotic neighborhood watch? Can you survive and maybe even go home?