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.
Complete 49 faction missions.
Drive all 104 vehicles.
Kill 30 enemies by mowing them down with vehicles.
Open the parachute and then land on foot 300 meters above the starting height.
Base jump 1000 meters.
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 10 challenges.
Kill 5 enemies by smashing them with an object tethered to your vehicle with the grappling hook.
Fly an airplane under 30 unique bridges in Panau.
Fly an airplane close to the ground for 30 seconds.
Kill 5 enemies by dragging them behind a vehicle with the grappling hook.
Kill 5 enemies with the melee attack while they're suspended with the grappling hook.
Kill 30 enemies while they're suspended in the air with the grappling hook.
Kill 30 enemies while they're falling through the air.
Kill 50 enemies in a row with inventory weapons without losing health.
Reach 75% completion in the normal mode or mercenary mode.
Get 100 stunt driver points.
Complete 9 stronghold takeovers.
Reach 50% completion in the normal mode or mercenary mode.
Collect 150 faction items.
Assassinate 25 colonels.
Stand on foot at the highest point of Panau.
Kill 20 enemies in 60 seconds.
Collect 1000 resource items.
Complete story mission 7.
Complete story mission 6.
Complete story mission 5.
Complete story mission 4.
Reach 100% complete in 100 locations.
Complete 1000 sabotages.
Hijack 50 enemy vehicles.
Travel 75 kilometers by land vehicle.
Discover 100 locations.
Kill 750 enemies.
Kill 30 enemies by using the grappling hook and making them fall to their death.
Complete story mission 3.
Kill 50 enemies with headshots.
Kill 50 enemies using melee attacks.
Complete 100 sabotages.
Complete 3 stronghold takeovers.
Reach 100% complete in 15 locations.
Collect 100 resource items.
Drive 30 different vehicles.
Complete story mission 2.
Complete story mission 1.
Destroy 30 objects in 60 seconds.
Cause chaos for the first time.