Kill your first Zombie.
Find some painkillers.
Blind yourself with night vision goggles.
Enter the underground laboratory.
Find a broadsword.
Harvest guts from a zombie.
Equip some armor.
Find a Tommy Gun.
Harvest Stone.
Survive for 28 days.
Enter the quarantine zone.
Find a Knife.
Harvest wood from a tree or log.
Find an axe.
Build a campfire.
Light a campfire.
Find a revolver.
Find the church.
Craft a zombie cloak.
Craft a bow.