Thought KH2 was really fucking fun when I played through it some 7-8 years ago, but playing it again made me realize that pretty much everything outside the combat, mostly the bosses, was a fucking chore. There's just nothing going on there.
The worlds are really boring and you just run from point A to point B, watch the autismo fanfiction play out, repeat. It's ass.
Playing on critical does make the fighting really fun though, I'll admit that, but that replay really soured my opinion on it.