The world outside town belongs to zombies. Clear 60 zones across farmland, suburbs, factories, mountains and a toxic island. Every 6th zone has a boss.
A normal outbreak. Odd things: a crashed drone with a MehGen logo, and zombies that seem a bit too calm.
Billboards for a MehGen “calm-down” pill. The Mall Cop boss wears a MehGen security badge.
The hospital ran MehGen trials. The Surgeon was their doctor. The power station still feeds a strange, buried rail line.
A sci-fi MehGen outpost inside the caves, guarded by soldiers in sci-fi armor. Fix the old station and the sci-fi train wakes up.
The full sci-fi lab complex where it all started. The Mutant is patient zero. Beat it, then escape on the lab train.