Kill 250 zombies using firearms.
Find 120 collectibles.
Kill 50 zombies using a vehicle.
Drive a total distance of 10 kilometers.
Complete 5 quests with 3 co-op partners.
Sever 100 limbs.
Kill 50 human enemies.
Finish 75 quests cumulatively.
Reach level 25.
Find 60 collectibles.
Join another player's game.
Play in a co-op team of 4 different playable characters.
Kill 250 zombies using edged melee weapons.
Travel a distance of 20 kilometers on foot.
Kill 250 zombies with modified weapons.
Reach level 10.
Breach a locked door with the first blow.
Create weapons to rival the gods of fire or thunder.
Create a customized weapon.
Complete 5 quests in a single co-op game with the same partners.
Complete 25 quests while playing with at least one co-op partner.
Kill a zombie with 10 different melee weapons.
Kill 250 zombies using blunt melee weapons.
Kill 5 Infected in a row with a single blow.
Kill 25 zombies with your bare fists.
Customize 25 weapons.
Kill an Infected with a grenade blast.
Loot 5 Exceptional Weapons.
Explore the entire island.
Use a hammer to kill a series of 15 zombies without taking damage.
Heal yourself with a medkit 100 times.
Kill 150 enemies using Analog Fighting controls.
Complete act I with 4 different characters.
Reach level 50.
Set 10 zombies on fire simultaneously.
Kill 100 enemies with Fury attacks.
Play with 10 different co-op partners for at least 15 minutes each.
Play any Arena in co-op.
Kill 10 zombies in a row with headshots.
Set 5 enemies on fire and then kill them with explosives.
Survive 5 waves using only your fists and legs.
Kill enemies of 6 different types during a single round.
Survive 5 waves in each of the 4 Arenas.
Survive 15 consecutive waves using the analog combat controls.
Survive 15 consecutive waves with each of the 4 characters.
Survive 10 consecutive waves using only custom weapons.
Survive 30 consecutive waves with at least one co-op player.
Survive wave 30.
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