This is on the fairground level (after the race). After saving the little girl you have to beat up a few thugs and proceed to the right.
WARNING: During this battle and before following the hand to the right is the last chance to switch characters before the achievement. If you don't control Terence you have to switch now or you have to restart the whole level!
The villain - you saw a few times already - will punch the ball in the cutscene and you have to outdo him to proceed. You have to make a good punch for the first time for the achievement or you have to restart the whole level. When you step to the ball a small yellow bar will turn up on your side of the screen. It has a green line near the end. You have to land the moving line between the green and the end of the bar. You have infinite time to prepare yourself. I suggest pressing the button before the moving line touches the green line because if you don't have inhuman reflexes you will be late. This way you will be late and it slips into the good part.