Shoot off the leg of a zombie.

Let every target fall over from time-out.

Spend only one bullet per target in a range.

Equip Explosive rounds.

Destroy 50 food items.

Destroy the last target of the range with the last bullet in your clip.

Attain at least silver on every Warehouse range.

Equip overpressure rounds.

Equip hollow point rounds.

Use a grenade on the final target in a simple range.

Attain at least bronze on every Allied range.

Equip zombie rounds.

Fire 10,000 rounds.

Purchase a skinned version of a gun.

Equip the largest magazine available to an owned gun.

Get 10 headshots in a row.

Destroy 500 food items in the Sandbox.

Attain platinum on every Allied range.

Have 1,000,000 cash.