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