Neat! I made it to level 11 (score 930)!
I love the screen shake every time you hit something, and the way the wizard flips smoothly from one side to the other (he's a very 2-dimensional character, isn't he?). The vibe is nice and chill, though the action gets pretty hectic quickly. You nailed the difficulty curve perfectly — I had time to figure out the controls before it smoothly ramped up. I never felt bored.
I know you had ambitions to put in more features, but honestly this is not a bad effort at all, especially considering you did it in less than a day! Great work!