This trophy is titled "Don't Give A Kaka" and it's for executing each of Tao's lunging attacks (Upward, neutral and diving) in one combo. While this may sound a bit tedious, it's actually a rather short input that only requires some speed.
Tao has one move that launches the enemy in to the air featured in a couple challenges. It is forward and A, which is square on default controls. After the second hit lands you want to immediately jump and press up+D (X on your standard controls). After this simply press D again followed by Down + D and if the combo stays red and all three attacks land you'll have your trophy!
I did this against Tager in two player local matches and I was up against the right hand side for this one.