Complete every missions on Heroic difficulty.

Complete every missions on Normal difficulty.

Complete every missions on Legendary difficulty. (unlock the Gold Shotgun)

Play arcade mode with 3 bonuses in your package.

Use a Continue Token for the first time.

Buy a new Helmet in the store.

Die for a total of 99 times or more.

Complete a Weekly Challenge.

Upgrade any Weapon or Vehicle for the first time.

Get the Sergeant rank.

Get any Commendation to Iron level.

Run for a total of 250,000m.

Fully upgrade any Weapon or Vehicle in the store.

Find the 8 hidden Skulls. (unlock the Flaming Skull helmet)

Complete 5 Weekly Challenges.

Get any Commendation to Max level.

Get the General rank.

Run for a total of 500,000m.

Buy 7 helmets or more in the store.

Get a total of 250 Laser Kill medals or more.