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