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.
Complete 50 challenges.
Fly an airplane under 30 unique bridges in Panau.
Drive all 104 vehicles.
Bonus for completing the game on extreme difficulty. Also gives you the bonus for hard and normal difficulties.
Complete 10 challenges.
Complete 49 faction missions.
Complete 9 stronghold takeovers.
Kill 5 enemies by smashing them with an object tethered to your vehicle with the grappling hook.
Base jump 1000 meters.
Bonus for completing the game on normal difficulty.
Bonus for completing the game on hard difficulty. Also gives you the bonus for normal difficulty.
Complete story mission 7.
Complete story mission 6.
Reach 50% completion in the normal mode or mercenary mode.
Collect 150 faction items.
Assassinate 25 colonels.
Complete story mission 5.
Collect 1000 resource items.
Complete 1000 sabotages.
Reach 100% complete in 100 locations.
Stand on foot at the highest point of Panau.
Hijack 50 enemy vehicles.
Kill 30 enemies by mowing them down with vehicles.
Complete story mission 4.
Kill 30 enemies while they're suspended in the air with the grappling hook.
Kill 30 enemies while they're falling through the air.
Complete story mission 3.
Discover 100 locations.
Kill 30 enemies by using the grappling hook and making them fall to their death.
Open the parachute and then land on foot 300 meters above the starting height.
Kill 750 enemies.
Kill 50 enemies using melee attacks.
Kill 50 enemies with headshots.
Complete 3 stronghold takeovers.
Get 100 stunt driver points.
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.
Reach 100% complete in 15 locations.
Kill 50 enemies in a row with inventory weapons without losing health.
Kill 20 enemies in 60 seconds.
Collect 100 resource items.
Complete 100 sabotages.
Travel 75 kilometers by land vehicle.
Drive 30 different vehicles.
Fly an airplane close to the ground for 30 seconds.
Complete story mission 2.
Complete story mission 1.
Destroy 30 objects in 60 seconds.
Cause chaos for the first time.