Fists of Fury (Bronze)
Objective: Kill a mutant with your fists

 Kill a zombie (Bronze)
Objective: Kill a zombie

 Master Craftsman (Bronze)
Objective: Fully upgrade a weapon with any status effect

 Watch this! (Bronze)
Objective: Use your first Smart Bomb

 A Legion of Zombies (Silver)
Objective: Kill 500 zombies in one level

 Can’t touch this (Silver)
Objective: Complete a Base quest without taking any damage

 Getting to know each other (Silver)
Objective: Complete all character quests

 The Collector (Silver)
Objective: Complete ‘Dev Card Hunt!’

 Secret Trophies

 Back with the X (Bronze)
Objective: Witness Rachel joining the group

 Big Brain Brian (Bronze)
Objective: Witness Brain joining the group

 Thought this was a Zombie Game? (Bronze)
Objective: Witness Luxo joining the group

 Touch Base (Gold)
Objective: Complete ‘Return to the Military Base’