Cysts are these little pustules (for lack of a better word) that shoot out little mines if you get too close to them.
What you need to do for this achievement is to Telekinesis Grab the Mine when it pops out and shoot it back at the Cyst that 'spit' the Mine at you in the first place.
You have to be relatively quick to get the Mine before it hits the wall/ground.
I found the best ones to do this to are the Cysts that are on the Ceiling. This is because the blast from the mine won't be enough to kill the Cyst and you will have many attempts to Grab the Mine.
The guys over at Achievement Hunter have this Achievement guide that is both short and Informative.
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**All credit goes to Jack & Burnie from Achievement Hunter for this video. These videos rock and deserve a Subscription!**