Great work! Nice to finally get my hands on what you've been showing on your YouTube channel.
Not much to complain about. Like some others, I think the buildings could be a little smaller so the town is less sprawling overall. Fireballs are kinda hard to see. More indication of the shortcut keys would be nice, even just in the description. I did not catch on to z and x at all during my first playthrough, (although I did go into the inventory screen, so maybe that's on me).
The music was probably the weak point of the experience for me (the songs themselves, I mean. The lack of transitions is fine), but even that was nice enough.
I would also welcome gamepad input. Hold-down-the-button power attacks would be nice too.
But those are all pretty insignificant. On the whole it was fun!