This achievement is story related and can not be missed.
Close to the end of the second mission of the expansion, you will be inside of the Sky Fortress and a huge spider-like tank will be walking on the roof. It is very easy to kill, I used just two RPG missiles for example. After killing it the achievement will unlock.
Here is a video that shows how someone got the achievement:
(Not my video)
Starts killing the robot: 06:50
Achievement pops: 08:20
Ray Carsillo. "Just Cause 3 Sky Fortress DLC - Taking Control Mission." YouTube, 15 Mar. 2016. Web. 09 Aug. 2016.