Really good concept, fun and simple.
I like your game design, fighting with rocks is tricky and unique way that make game interesting. Movement mechanic gives game good dynamics. Recharge mechanic make not really easy and gives possibility to use better manage your power.
I like how you design to show help message about recharging with icon of input *clap*
Probably what missing is of course some upgrades to make game more rouge-like type and boost dopamine loop. Otherwise there is no much to criticize about the game.
Congratulations on your submission!