HAHAH - If you don't jump into the time warp, but work backwards - you'll find an area with a tonne of spikeys.. make it there and unlock a special MODE!! w00t!
Good game concept, however the detection could have a little greater sensitivity.. there were many times I felt I should have hit the "ball" and it turned to be a swing and a miss...
Perhaps write a "rage" function where you get the opportunity to pummel your opponent for a few seconds?