Here is the full list of all 50 Just Cause 2 achievements. It takes around 50-60 hours to unlock all of the achievements on Windows.
Reach 75% completion in the normal mode or mercenary mode.
Complete 50 challenges.
Complete 49 faction missions.
Collect 150 faction items.
Fly an airplane under 30 unique bridges in Panau.
Complete 10 challenges.
Assassinate 25 colonels.
Reach 50% completion in the normal mode or mercenary mode.
Collect 1000 resource items.
Reach 100% complete in 100 locations.
Complete 1000 sabotages.
Hijack 50 enemy vehicles.
Get 100 stunt driver points.
Complete 9 stronghold takeovers.
Kill 5 enemies by smashing them with an object tethered to your vehicle with the grappling hook.
Complete story mission 7.
Bonus for completing the game on normal difficulty.
Bonus for completing the game on hard difficulty. Also gives you the bonus for normal difficulty.
Bonus for completing the game on extreme difficulty. Also gives you the bonus for hard and normal difficulties.
Complete story mission 6.
Drive all 104 vehicles.
Fly an airplane close to the ground for 30 seconds.
Kill 30 enemies by mowing them down with vehicles.
Discover 100 locations.
Travel 75 kilometers by land vehicle.
Complete story mission 5.
Kill 50 enemies using melee attacks.
Kill 5 enemies with the melee attack while they're suspended with the grappling hook.
Kill 5 enemies by dragging them behind a vehicle with the grappling hook.
Kill 20 enemies in 60 seconds.
Complete story mission 4.
Kill 30 enemies by using the grappling hook and making them fall to their death.
Kill 30 enemies while they're suspended in the air with the grappling hook.
Base jump 1000 meters.
Kill 750 enemies.
Reach 100% complete in 15 locations.
Collect 100 resource items.
Open the parachute and then land on foot 300 meters above the starting height.
Complete 100 sabotages.
Complete story mission 3.
Complete 3 stronghold takeovers.
Kill 30 enemies while they're falling through the air.
Kill 50 enemies with headshots.
Drive 30 different vehicles.
Stand on foot at the highest point of Panau.
Kill 50 enemies in a row with inventory weapons without losing health.
Complete story mission 2.
Destroy 30 objects in 60 seconds.
Complete story mission 1.
Cause chaos for the first time.