In this video guide I will show you how to defeat an enemy with a hacked droid. I did this with the Slice: Probe Droid skill that you get for BD-1. I got this at the
work bench after leaving the second tomb where you get your Force Pull ability. I pointed it out in the video as well.
Once you get the Slice ability, head to the Crash Site. This is also on
Zeffo where you get the Slice ability. Head to the
Crash Site and find a Probe Droid. There will be several in this area to try and get the achievement. Once you get near one, use Force Pull to bring it to you. Then you will need to press down on the D-Pad to have BD-1 hack it. Now you will need to find another Probe Droid to kill with BD's hacked one. Once you do, make sure not to attack it or deflect shots back at it. Or you will accidentally kill it and not get the achievement. Just make sure that BD's Probe Droid does all the work in killing the other Probe Droid. Once that is done correctly the achievement will pop.