Kill 10 Spitters with a ranged weapon.
Kill 25 zombies with pistol headshots.
Injure a single zombie with your melee weapon, the pistol and the shotgun, then stealth kill it.
Acquire the gas mask.
Kill 10 enemies in a row without being detected.
Execute 25 downed zombies.
Kill 50 zombies with a melee weapon.
Stealth kill 25 zombies.
Kill 100 zombies in total.
Collect 25 ammo packs.
Acquire the combat flashlight.
Recover to max health from minimum health.
Acquire the two-way radio.
Acquire the rope.
Acquire the camera.
Kill 10 zombies with close range shotgun blasts.
Kill an airborne Bouncer.
Kill 5 Sirens while they are screaming.
Acquire the grappling hook.
Kill 10 Butchers.
Collect all lost stories.
Collect all research logs.
Collect all Charon's logs.
Collect all postcards.
Collect all snapshots.
Kill 5 enemies in 2 seconds.
Find all the underground secondary areas
Find the underground labs
Complete the underground labs
Acquire the walloper
Acquire the assault rifle
Kill 10 enemies at long range with the walloper
Kill 100 enemies with the assault rifle
Collect all of Ronald's logs
Kill a Dweller using an environmental hazard
Stealth kill a Dweller
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