The concept is hilarious! It was fun/infuriating to play! I admit I didn't get too far tho :P. Not sure what the point of the HP was for since mine was below -200 by the time I gave up.
Some minor critique: I think it would be beneficial to have some visual indicator like a power meter or something showing how much velocity you'll have from holding spacebar. Also I don't recall explanation of what the controls are to play. I think just arrows/space, but maybe I missed something?
Great job!