So, first off, great job on finishing your first game! Most people quit entirely due to the complexity of it all.
Now, obviously this is not finished, and it's also barely a metroidvania, but that being said, the few bits you've got are quite rad! Movement actually feels buttery smooth, take parts of this into a new game and you'd get a really nifty shooter.
That is about all I've got to say, keep doing gamedev!