Gets old really quickly. Enemies are just a re-skin of 3 different types (including the bosses). There's little map variety if any. The weapon and pet leveling system is fair. The biggest peeve is the lack of a drop ball option so you'll clear a stage, get to the end then have a ball caught in a perfect loop doing 1k per bounce on a boss with 30M health. So either wait or restart the level and lose your progress. The constant barrage of $10-$99 packs is excessive.