The Fate of the Colony
The ExoGeni personnel are here from their bunker, and will greet you with either respect or distrust as you learn the consequences of your actions for the colony's future. Your results here can be predicted by a simple formula, as follows:
Colony health For each sidequest completed (varren meat, geth in the tunnels, etc.), add 1
For each surviving colonist, add 1
Colony health is cumulative, so 11 surviving colonists and three sidequests nets a health of 14, for example.
Colony leadership If Shiala survives, leadership is 5
If Ethan Jeong agrees to help the colony, leadership is 12
Colony leadership is not cumulative; if Jeong agrees to help, it doesn't matter what you do with Shiala, you still only get 12 points.
For Feros to survive, the total value of colony health + colony leadership must be thirteen or higher. So, for example, if you kill Shiala and Jeong, you need to spare at least 13 colonists, or spare at least 9 colonists and complete all four sidequests. If you convince Jeong, to help, you only need to do one sidequest or save one single colonist. Meet this bar and the remaining colonists will thank you for your help and cheer about the colony's newly bright future. Fall short, and they'll dejectedly explain that the colony is being shut down.