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