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