I loved the fact that, although it is a puzzle game, I only needed the walkthrough in two levels - both of them near the end -, unlike most puzzle games I found here, that I can't solve from the very beginning.
Although it says 'it autosaves every time you end a battle', this doesn't seem to be happening. Which sucks, because I want the last badge and, if the game freezes - which has happened to me - or I close the window, I have to start all over.
I would kill for a fast forward button AND an undo option. I lost count of the times my hand slipped and I ended up destroying a huge level in the last cup.