Boss of all Bosses

Made for the Chimerical GMC Jam #8.  The theme was 'boss fighting game', and sccording to Google dictionary, a 'boss' in geology means a 'mass of igneous rock protruding through other strata.'  This is why it's a game in which the enemy is rock that starts protruding through the road you're walking on.  Hammer away at those bosses and keep your road bumpiness meter down as long as possible!