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