AustereDreamX: Do you mean you are surprised that this particular game is fun, or that you are surprised that Final Fantasy game in general is fun?
From what I'd read it got mostly very good reviews. I'm asking because I look forward to playing it, after I finish earlier ones that is.
Despite there being quite a few games from Square Enix I like, I don't really trust them for making games, much less sequels, prequels and spin-offs. "<.<
And beware it's a direct sequel to Final Fantasy XII, so if you didn't play it yet, you'll probably miss a lot of stuff, and get a lot of spoilers from the first game.
And a tip: if a boss it too hard, maybe you'd want to spam flying units at it while you keep your leaders at a safe distance.