Kill 250 zombies using edged melee weapons.

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

Kill a Suicider with a grenade.

Join another player's game.

Defeated the ruler of all oozes in a minute or less.

Defeated that jerk with the claw in a minute or less.

Kill 250 zombies with modified weapons.

Kill 50 zombies using a vehicle.

[TRAINING] Dished out a total of over 1,000,000 damage.

Travel a distance of 20 kilometers on foot.

Complete the "No Place Like Home" level

Smash your opponent into something 20 times in the "Chicken Fight!" level

In Die Rise, kill 5 zombies with a single shot from the Sliquifier.