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