Simply awesome, probably my favorite game so far. The textography, sounds, icon, parallax, omg this game is a visual masterpiece.
The increase of intensity is very satisfying and gives you a good chance to learn the game first. it's a very original idea and plays well. The affordances you give the user (warning, beep, pie countdown to show when the pad will break) all show excellent mastery of game design, user empathy and that you clearly playtested and tuned the crap out of this game.
Bravo!