Complete 50 challenges.

Fly an airplane close to the ground for 30 seconds.

Complete story mission 7.

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

Picked 25 locks.

Crafted 20 items.

Completed Ain't That a Kick in the Head.

Reach 75% completion in the normal mode or mercenary mode.

Base jump 1000 meters.

Complete story mission 5.

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

Complete story mission 4.

Collect 1000 resource items.