Here is the full list of all 50 Just Cause 2 achievements. It takes around 60-80 hours to unlock all of the achievements on Windows.
Reach 75% completion in the normal mode or mercenary mode.
Hijack 50 enemy vehicles.
Drive all 104 vehicles.
Fly an airplane close to the ground for 30 seconds.
Fly an airplane under 30 unique bridges in Panau.
Kill 5 enemies by smashing them with an object tethered to your vehicle with the grappling hook.
Kill 5 enemies by dragging them behind a vehicle with the grappling hook.
Kill 30 enemies while they're suspended in the air with the grappling hook.
Kill 5 enemies with the melee attack while they're suspended with the grappling hook.
Complete 50 challenges.
Kill 50 enemies using melee attacks.
Complete 49 faction missions.
Complete 9 stronghold takeovers.
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.
Reach 50% completion in the normal mode or mercenary mode.
Collect 1000 resource items.
Kill 30 enemies by using the grappling hook and making them fall to their death.
Assassinate 25 colonels.
Collect 150 faction items.
Kill 30 enemies by mowing them down with vehicles.
Kill 20 enemies in 60 seconds.
Kill 30 enemies while they're falling through the air.
Complete 1000 sabotages.
Reach 100% complete in 100 locations.
Open the parachute and then land on foot 300 meters above the starting height.
Complete story mission 4.
Complete 10 challenges.
Discover 100 locations.
Kill 50 enemies in a row with inventory weapons without losing health.
Get 100 stunt driver points.
Complete 3 stronghold takeovers.
Complete 100 sabotages.
Base jump 1000 meters.
Travel 75 kilometers by land vehicle.
Drive 30 different vehicles.
Kill 750 enemies.
Reach 100% complete in 15 locations.
Complete story mission 3.
Collect 100 resource items.
Stand on foot at the highest point of Panau.
Kill 50 enemies with headshots.
Destroy 30 objects in 60 seconds.
Complete story mission 2.
Complete story mission 1.
Cause chaos for the first time.