Win the brick throwing contest

Upgrade and then break one of every melee weapon

Pet Buckley the dog

Craft every item

Find a Firefly pendant

Kill 250 zombies using edged melee weapons.

Join another player's game.

In Blackout, unlock Battery, Ruin, Firebreak, Seraph, Nomad, Prophet, Ajax, Crash, Torque and Recon

Create weapons to rival the gods of fire or thunder.

Kill 50 zombies using a vehicle.

Breach a locked door with the first blow.

Kill 5 Infected in a row with a single blow.