Complete Mission 8 (Any Difficulty Level)

Blow Up 1 000 Zombies

Complete Mission 6 (Any Difficulty Level)

Complete Mission 4 (Any Difficulty Level)

Fully Upgrade All Stats Of Any Weapon In Campaign Mode

Complete Mission 2 (Any Difficulty Level)

Help Your Country To Clear The Virus Infection

Complete Mission 1 (Any Difficulty Level)

Father and Son - Follow the schedule with Shaun and put him to bed in a good mood

Complete one challenge and receive at least a Bronze medal.

Complete the game on Medium difficulty.

Complete the game and choose the Light Side ending.

Save Shaun