Kill a zombie with 10 different melee weapons.

Complete the Trinity. (The Ballad of Gay Tony)

Win a Beach Volleyball match in any mode.

You were successfully promoted up a rank in multiplayer.

Help Billy get his bike back. (The Lost and Damned)

Danced through 1 preset Playlist in Playlist mode!

Complete Campaign Mode on any difficulty

Use the upgraded Rossmore secondary fire to set 6 enemies on fire at once

Kill 3 enemies simultaneously using a single mutated body

Kill 5 drivers without destroying their vehicle

Kill 25 Grims using only grenades

Collect 10 journals

Kill 20 enemies with environmental objects