For some background, Lv. 29 was long considered a "kill screen" because you couldn't get your pieces to the sides fast enough. That was until hypertapping really began to be mastered by some players. Hypertapping is basically pressing the d-pad 11 or more times per second instead of holding it down for the automatic movement (which moves pieces at 10 moves per second).
Teenager Joseph is a hypertapping master, and he recently dethroned Jonas Neubauer to claim the title of Classic Tetris champion.