Defeat 20 enemies by blind-firing while in cover (without aiming with L1/R1)

Find 20 treasures

Defeat 30 enemies with the KAL 7

Defeat 30 enemies with the G-MAL

Make five enemies drop their grenade by shooting them

Defeat 20 enemies with hand-to-hand combat

Create and save a custom map.

Kill 1 000 Zombies

Fully Upgrade All Stats Of Any Weapon In Campaign Mode

Complete A Mission In Co-Op Mode (Any Difficulty Level)

Fully Upgrade A Single Stat Of Any Weapon In Campaign Mode

Purchase your first upgrade