Here is the full list of all 21 Narco Terror achievements.
Complete the game on any difficulty
Kill 3,000 enemies in total
Use all special ammo and weapons
Find 5 collectables
Meet Delgado for the first time
Melee kill 10 enemies
Upgrade a weapon
Get to South America
Destroy 5 ground enemies with your aircraft
Complete Mission 01
Kill 20 enemies with grenades
Kill 150 enemies
Destroy 50 vehicles
Kill 6 enemies with a single grenade
Upgrade all weapons
Find all the collectables
Complete the game on hardcore difficulty
Play Co-Op mode for 5 minutes
Complete a vehicle minigame without getting hit
Complete any mission without dying
Earn 15,000 dollars