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