Complete 50 challenges.

Reach 50% completion in the normal mode or mercenary mode.

Reach 100% complete in 100 locations.

Assassinate 25 colonels.

Fly an airplane close to the ground for 30 seconds.

Hijack 50 enemy vehicles.

Kill 5 enemies by smashing them with an object tethered to your vehicle with the grappling hook.

Kill 30 enemies by mowing them down with vehicles.

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

Kill 5 enemies by dragging them behind a vehicle with the grappling hook.

Kill 30 enemies while they're falling through the air.

Reach 100% complete in 15 locations.

Bonus for completing the game on Hardcore difficulty.