Purchase all skills in all categories.

Fully mod and completely upgrade any weapon.

Collect 75% of all relics.

Shoot a bundle of dynamite out of the air.

Kill and loot 10 small animals (rabbits, chickens, rats).

Kill and loot 10 flying animals (crows and gulls).

Kill 75 enemies with the rifle.

Kill 25 unaware enemies.

Collect 5000 pieces of salvage.

Collect 25% of all relics.

Force an enemy to drop dynamite that kills two people when exploding.

Complete one challenge.