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