Just like previous years but in case you are new to the franchise…the low throw mechanic is controlled by throwing a pass to a receiver (x,a,y,b) and holding LT simultaneously. For this you need to throw a TD pass using this menchanic.
Simply get into the red zone (about 10 yards away) and call a play you feel comfortable with. Then hold LT and the button of your receiver and complete a TD pass for the infamous “throwin dots.” Achievement.
Also for reference the achievement or any achievements doesn’t unlock during the opening “John madden” game so just quit that and start a play now game w.e you like!