Flatline
The city of Danforth has never been the same since the military pulled out. Rumor has it that a nuclear warhead was detonated in the middle of the city rumor also has it that it's just sitting there waiting a Megaton of death. (Fallout 3 reference had to do it) However, the truth of the matter is that no one truly knows thanks to that ghastly miasma surrounding the heart of the city. My idea of Flatline is a revisit to Danforth via red talon agents keeping the military aspects of lifeline. This time however zombies are not the only things trying to kill you now so is your environment. The miasma makes fatigue and food a serious issue. What good is all that ammunition and guns if you're too hungry and tired to shoot and reload?