Kill a Ram using tackle skill.

Kill 5 Infected in a row with a single blow.

Set 10 zombies on fire simultaneously.

Use a hammer to kill a series of 15 zombies without taking damage.

Kill a Butcher using an axe.

Kill 100 enemies with Fury attacks.

Play with 10 different co-op partners for at least 15 minutes each.

Kill an Infected with a grenade blast.

Kill a Suicider with a grenade.

Kill 250 zombies using firearms.

Find 120 collectibles.

Kill 10 zombies in a row with headshots.

Kill 250 zombies with modified weapons.

Save 5 people besieged by zombies.

Kill 250 zombies using edged melee weapons.

Drive a total distance of 10 kilometers.

Kill 250 zombies using blunt melee weapons.

Kill 50 human enemies.

Sever 100 limbs.

Find 60 collectibles.

Heal yourself with a medkit 100 times.

Reach level 25.

Complete 5 quests with 3 co-op partners.

Complete 25 quests while playing with at least one co-op partner.

Play in a co-op team of 4 different playable characters.

Kill 50 zombies using a vehicle.

Use a large medkit to heal an injury of 5% or less.

Travel a distance of 20 kilometers on foot.

Create a customized weapon.

Kill a zombie with 10 different melee weapons.

Reach level 10.

Complete 5 quests in a single co-op game with the same partners.

Breach a locked door with the first blow.

Kill 25 zombies with your bare fists.

Join another player's game.

Survive 15 consecutive waves using the analog combat controls.

Survive 5 waves in each of the 4 Arenas.

Survive 5 waves using only your fists and legs.

Kill enemies of 6 different types during a single round.

Survive 10 consecutive waves using only custom weapons.

Play any Arena in co-op.