The gameplay feels quite smooth and enjoyable. I like the feel when hitting enemies, and the platforming part is simple but well executed in my opinion. The ambient sound is very good, but I think it feels like something is missing. I like JDNation's suggestion of adding a Minecraft-style music along with the ambient sound. So it keeps that relaxing and pleasant feel.
I think there was a lack of a situation where the powers are really exploited, but I see that you will continue with the project, so you still have a lot to add.
I've had a good time, good entry.