I have been playing this on Switch with the Castlevania edition. I really like the game, but I don't like a lot of the DLC. It would have been nice to be able to toggle off all the DLCs in the options to be able to play the Vanilla version of the game (at least in terms of levels), in order to avoid going into some of the ridiculous levels they added in whatever DLC. Someone discovering the game with the Castlevania edition is simply overwhelmed, and you end up in some pretty lame levels where the difficulty is high, and they don't even send you in the path to unlocking the few skills required to visit everywhere.
This complaint appart, I have to say that Dead Cells is one of the very best modern games I have played. It is excellent, gameplay is fast and super fun, visuals and music are unique and create a fantastic atmosphere. This is easily a 9/10 game, something I would put at the very top of what Western developers created in the last 10 years, alongside Outer Wilds, Streets of Rage IV and Sonic Mania.