Customize 25 weapons.

Kill 25 zombies with your bare fists.

Kill 250 zombies with modified weapons.

Kill 5 Infected in a row with a single blow.

Kill 10 zombies in a row with headshots.

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

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

Kill a Suicider with a grenade.

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

Create weapons to rival the gods of fire or thunder.

Save 5 people besieged by zombies.

Kill a Butcher using an axe.