Finish all quests in the game
Complete all the main quests cooperatively with any number of partners
Finish the game
Defeat Harlow
Enter the docks in Quarantine Zone
Find all collectibles
Find all the secret files
Make pact with Serpo
Survive the horde on the roof
Finish hospital quests for Cecil
Gain access to a long-range radio station
Find all the volunteer's voice recordings
Find and kill all named champion monsters located in dead zones
Find all pages from the guide book
Obtain level 70
Clear out the cinema
Finish quests for Dr. Kessler
Reach Henderson
Obtain level 50
Kill special enemies: Grenadier, Thug, Wrestler, Infected, Suicider, Screamer, Butcher, Floater.
Kill the Twins
Find 50% of collectibles
Successfully defend the tunnel entrance
Rescue 20 NPCs that have been grabbed by monsters
Kill 25 monsters with a chainsaw
Kill 100 monsters with a kick
Mark 100 opponents which were then killed by your co-op partners
Kill 100 monsters using the boat's speed boost
Find a boat for use in the jungle
Kill 100 enemies using charge attacks
Kill 10 monsters with one mine
Kill 50 monsters by smashing, decapitating or shooting them in the head
Kill 100 monsters with thrown melee weapons
Install a total of 5 barricades during hub defense
Escape from the ship
