Sold 50 guns to a shop

Killed 25 enemies with explosive weapons

Earned level 10

Killed 25 enemies with incendiary weapons

Complete story mission 7.

Discover 100 locations.

Kill 30 enemies by using the grappling hook and making them fall to their death.

Drive 30 different vehicles.

Kill 50 enemies in a row with inventory weapons without losing health.

Complete story mission 4.

Complete 150 sabotages.

Collect 100 resource items.