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