Defeated Katrina's Mech using Sunstone Knack

Defeated all bosses using Diamond Knack

Kill 53 597 Zombies

Complete a Round with a Kills-per-minute rate of 100 or more

Complete A Mission Without Receiving Any Damage

Complete Campaign Mode On 'Morbid'

Burn 1 000 Zombies

Collect All The Loot In Every Mission

Find all mementos in single player campaign in a single playthrough

Perform 500 Melee Kills

Kill 10 000 Zombies

Complete Campaign Mode In Co-Op Mode