Survival Stats:

No Mercy:
The Generator Room 35m 18s
The Gas Station 42m 24s
The Hospital 20m 34s
The Rooftop 30m 30s
Death Toll:
The Drains 22m 48s
The Church 19m 53s
The Street 1h 2m 48s
The Boathouse 17m 56s
Dead Air:
The Crane 17m 47s
The Construction Site 13m 57s
The Terminal 31m 34s
The Runway 18m 10s
Blood Harvest:
The Warehouse 16m 37s
The Bridge 16m 56s
The Farmhouse 30m 53s
Crash Course:
.
The Sacrifice:

Last Stand:
The Lighthouse 21m 12s