Bloodstained is one of those games that would only exist with Kickstarter funding. It is a very specific game, created to satisfy a very specific market: people who enjoyed playing the Castlevania series from 1997 through to 2009, after which point Konami abruptly stopped making them Metroid-style free-roaming platformers and started making them terrible 3D adventures instead. If you didn’t play any of the Castlevania games released during that period, I suspect Bloodstained is going to come across as a rather flabby, messy and generally rough-around-the-edges experience, because you won’t understand where the game is coming from.
On the other hand, if you are fortunate enough to have played one of the good Castlevanias, then Bloodstained is still going to come across as a rather flabby, messy and generally rough-around-the-edges experience. It’s just that in this case, you won’t care, because Bloodstained gets the important stuff right and does enough to scratch an itch that has gone un-scratched for just over a decade now.