First off, in order to do this achievement you have to unlock the skill "Evasive Kick" from the skill tree. By the time you get to the second planet Zeffo in the campaign you should have enough skill points to have unlocked it which is where you will encounter the Phillak – these are the 3 horned ram-like creatures you will be kicking.
I struggled with this one at first either trying to get them to kick or trying to use my kick and accidentally using my light saber until I developed this strategy.
1) Try and find a lone Phillak which you should encounter early on in the level.
2) You can wait for them to turn red for an unblockable charge – once they charge, hit B to dodge out of the way, remain close by, and with their back turned to you they will kick you. Make sure you are not blocking it.
3) Alternatively, you can block the various charges and head butts the Phillak will perform and try and maneuver behind around it to get it to kick you.
4) After it kicks you, quickly tap B then X thus kicking the Phillak. If you are not quick enough with the button mash you will probably light saber them by accident.
Here's a good video reference for those struggling: