Hello ManyWoundZ! I am glad to announce you that your're on the right path XD. Hapy to see that you decided to follow you dream and become a game designer.
As for the game... since this is a prototype I won't be too harsh. I noticed there is lag in almost all the areas, except for the cave. The player moves quite slow because of it and can be a bit annoying. The enemies just fly around as you said so that's a confirmation. I would sugest to not let the magic atack be spammed in the final product since that would be too easy for beating the game. Also, the enemies have a ton of health, an upgrade system would be great.
The NPC's are alright, however being an RPG I would have made the character dialogue image a little bit more cartoonish, it's just too realistic. Not saying that it is bad, you clearly nailed the pixel art, just don't think it is suitable for this kind of game. A little bit more dialogue could also help, instead of only one string use more just to add some spice to it.
It's responsive, so that's a plus. It doesn't crash even if it shows some lag. It is a good start, not a perfect one but a good enough to say that this could be a front page game in the future. Thanks for sharing and to those people who agree with me go fund hm over on Patreon!
P.S. The title screen could use some more work, just saying... :p