You can definitely tell that this was the first of it's kind, because there are a lot of things in this game that wouldn't be polished or perfected until later entries, one of those being bosses, I found the bosses in this game to be a little too easy, apart from the Maneater, cuz that was an unbalanced mess imo.
But with that being said, I still find a lot of the bosses in this game to be pretty cool, like the Tower Knight, Flamelurker, Storm King, Penetrator, and Old King Allant, with Storm King being my favorite because of it's arena and sound design, they really knocked it out of the ballpark with that one.
The design and the atmosphere of this game are also amazing, and from what little I've seen from the original, they truly did do a great job of recreating this world from the ground up.
All in all, it's pretty decent, not nearly as great as the ones that proceed it, but it's still a decent start for the rest of the series going forward.