hey man this is really cool, i do get a kick out of the cartoony illustrations & expressions on the character.
Some ideas:
-maybe the swirl background on the menu could rotate a little bit faster, it might look cooler that way
-Is it possible to put an option in the settings for computer users so they don't have to swipe using the mouse, but instead just click in the direction they want to attack (you can display an arrow pointing towards the mouse from the wizard character, to show whether the mouse is pointing you up,down,left or right). I understand this game is primarily for mobile users so don't get too bogged down on this idea if you don't want to.
-Is there a reason you haven't put in any screenshake for when the player zaps enemies & uses spells to attack them? It just seems like that would make me feel more powerful if the whole game shakes when I attack.
BTW these sound effects are pretty great. Will definitely be playing this game some more.