Once youve left Act 1 then you probably wont be able to return, but already it feels like there is enough content in Act 1 to be strong enough to come back and kill the Hag/enemies. Ive noticed from my playthrough already that a lot of the diplomatic dialogue choices might leave you a bit low on Exp in some cases, ive accidentally killed pretty much everyone at the druids grove and think it gave me a decent Exp boost, even though im still also not ready for the dirty Hag.
