Quantum Theory

To unlock this achievement, you must allow your companion Filena to kill 50 enemies. This is easiest achieved by pressing and holding the LB whenever Filena is near. Aim at an enemy to perform a combo throw which in turn may provide her with a kill, however, throwing Filena at an enemy does not always guarantee one. I don’t know if the enemy’s health or your distance away from your target has anything to do with this. This move must be allowed time to recharge. Spamming these combo kills is a great way to clear enemies while working toward this achievement, and also the Major League, and Cut a Rug achievements.

I hope this solution helped! Leave a comment letting me know if there is any room for improvement! Thanks.