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