You've tricked me once
Finish the game
30 ✓ January 24th, 2015
Obtain level 50
Obtain level 50
30 ✓ September 10th, 2014
Better than the arm
Kill 25 monsters with a chainsaw
30 ✓ September 14th, 2014
Serving Science
Finish quests for Dr. Kessler
30 ✓ December 31st, 2014
First Do No Harm
Finish hospital quests for Cecil
30 ✓ January 23rd, 2015
King among Kings
Kill special enemies: Grenadier, Thug, Wrestler, Infected, Suicider, Screamer, Butcher, Floater.
30 ✓ January 1st, 2015
Military Base
Gain access to a long-range radio station
30 ✓ January 3rd, 2015
The Storm
Escape from the ship
15 ✓ November 18th, 2013
Siege Hammer
Install a total of 5 barricades during hub defense
15 ✓ September 14th, 2014
Dream Team
Complete all the main quests cooperatively with any number of partners
15 ✓ January 24th, 2015
The Collector
Find 50% of collectibles
15 ✓ January 1st, 2015
Heart of Darkness
Find a boat for use in the jungle
15 ✓ November 18th, 2013
At Your Service
Rescue 20 NPCs that have been grabbed by monsters
15 ✓ January 24th, 2015
BrainLess
Kill 50 monsters by smashing, decapitating or shooting them in the head
15 ✓ November 18th, 2013
Bully
Kill 100 monsters with a kick
15 ✓ September 10th, 2014
Breaching the Tunnels
Successfully defend the tunnel entrance
15 ✓ September 14th, 2014
Defeat Harlow
Defeat Harlow
15 ✓ January 24th, 2015
The Cinema
Clear out the cinema
15 ✓ January 1st, 2015
Combat on the roof
Survive the horde on the roof
15 ✓ January 23rd, 2015
Henderson Town
Reach Henderson
15 ✓ December 31st, 2014
Meeting Serpo
Make pact with Serpo
15 ✓ January 23rd, 2015
The Docks
Enter the docks in Quarantine Zone
15 ✓ January 24th, 2015
Achiever
Finish all quests in the game
100 
Obtain level 70
Obtain level 70
90 
Jetboat
Kill 100 monsters using the boat's speed boost
90 
Hunter-Seeker
Find and kill all named champion monsters located in dead zones
90 
The Hoarder
Find all collectibles
30 
Professional Tourist
Find all pages from the guide book
30 
Twins
Kill the Twins
30 
News junkie
Find all the volunteer's voice recordings
30 
Mystery solved
Find all the secret files
15 
The Hurt Mine Locker
Kill 10 monsters with one mine
15 
Hurler
Kill 100 monsters with thrown melee weapons
15 
Juggernaut
Kill 100 enemies using charge attacks
15 
It's an Order
Mark 100 opponents which were then killed by your co-op partners
15