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