Honestly, your game is good. I think the biggest issue you're going to face as far as a commercial release goes is that even if your game is good, the competition in the platformer/metroidvania genre is the highest bar possible.
That being said, I do think you've cooked up something quite nice here. The actual mechanics feel really good and exploring is fun. The enemy designs were interesting too. If there was anything I had to say was wrong with it, it'd have to be the protagonist not really looking interesting. I didn't play very far (I killed the spitting beetle boss guy and got acorn mode) but I hope there's unique biomes later in the game too.
See it through to the end! Good luck!