I just played through the first dungeon as well and I will say:
Liked: Overworld looks great and the scrolling looks awesome.
Disliked: Hitboxes seem off, I was able to hit guys not on the same line as me, did not work in the original game. Dungeon shouldn't scroll, it should be zoomed out further with the new graphics, it looks wrong.
If I didn't have 100 other games to play, I'd beat this thing in the next few hours... but dungeon scroll turned me off too much.