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