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 10 challenges.
Complete story mission 5.
Kill 30 enemies while they're suspended in the air with the grappling hook.
Kill 30 enemies by mowing them down with vehicles.
Reach 75% completion in the normal mode or mercenary mode.
Complete story mission 4.
Complete story mission 3.
Kill 50 enemies using melee attacks.
Complete 49 faction missions.
Kill 20 enemies in 60 seconds.
Reach 50% completion in the normal mode or mercenary mode.
Get 100 stunt driver points.
Collect 150 faction items.
Assassinate 25 colonels.
Collect 1000 resource items.
Hijack 50 enemy vehicles.
Complete 1000 sabotages.
Stand on foot at the highest point of Panau.
Reach 100% complete in 100 locations.
Discover 100 locations.
Kill 30 enemies while they're falling through the air.
Kill 5 enemies with the melee attack while they're suspended with the grappling hook.
Travel 75 kilometers by land vehicle.
Kill 750 enemies.
Open the parachute and then land on foot 300 meters above the starting height.
Complete 9 stronghold takeovers.
Kill 30 enemies by using the grappling hook and making them fall to their death.
Base jump 1000 meters.
Drive 30 different vehicles.
Reach 100% complete in 15 locations.
Kill 50 enemies with headshots.
Complete 100 sabotages.
Collect 100 resource items.
Complete 3 stronghold takeovers.
Complete story mission 2.
Complete story mission 1.
Destroy 30 objects in 60 seconds.
Cause chaos for the first time.
Complete story mission 6.
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 50 challenges.
Kill 5 enemies by dragging them behind a vehicle with the grappling hook.
Kill 5 enemies by smashing them with an object tethered to your vehicle with the grappling hook.
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.