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