It looks fun, I like the way you get revived, but it's quite annoying to play. Most of the problem stems from the jump height, tapping the key shouldn't shoot you insanely high in these kind of games. The jump height needs to be controlled by the player more (Hold the key to go higher).
I noticed you used box colliders for the player (And circular colliders for the balls I assume?), which is fine, but it might be better to make them more forgiving when jumping (Smaller then the player);P People won't mind a slight over lap, it would in fact make it more exciting ("Wow, I just barely dodged that" Rather then "That didn't hit me!")
Oh, I adore the happy guy in the top right btw, he rules XD