u/5like

As much as the need to manage and influence the available playground is understandable :

• Having a killzone arround the map/zone makes sence and seems fair.
• Radiation killzones are in the same way ok and a great trick to create no go areas.
• Doors with scenatium locks are fine and not an issue at all.
• An entire faction turning hostile because of previous choices is peack !

BUT ... in a first person shooter game ... having a mechanic that makes an hostile npc act as a walking gameover feels extremly unfair, out of place and frustrating.