Character concept

This is a concept for the main character of a video game.  Im trying to create a portfolio project of a video game concept.  Im going to include character sheets, environments, and weapons concepts.  The game idea I have come up with is a rig/survival type game where the main character is a mother of young twin boys (like me! haha) in a hostile settlement on another planet.  

The earth (being overpopulated or in peril) sent people to this other planet to start anew but it has become a lawless community with danger inside the city walls and outside.  I haven't created much of a story because I want to focus more on the concepts, but there is a ballpark summary.  

Thanks for looking