I really appreciated the attention to detail in your visuals! The bobbing idle animation, the parallax in the overworld, and the glitchy effect with splitting and combining added a lot to the feel of your game :). I was honestly a little sad there wasn't more of the game in the overworld because it was quite a beautiful looking scene :P.
Though, like others have said, the movement of the character was often frustrating.
I see a lot of potential in this game. Congrats on your first published title!