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