So, I beat this at 5am. It wasn't exactly what I'd expected, because I've had so much on my mind that I forgot it was a Metroidvania. That said, I quite liked it and enjoyed it more as I progressed.
It's an 8/10
I noticed a frame rate issue, where it would hitch for a second at times. Plus, it crashed once upon loading it up.
That pause thing also happened to me, too. I thought it was my controller, but I guess it's not? It happened once during the first cutscene.
It gets pretty effing difficult later on, but I managed to beat it. I'm not great at these types of games, but did pretty well. Only died 596 times, but maybe 100 or so were intentional so I'd respawn with more health.