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