Wow... I started replaying early using the Speed Walkthrough, as I mentioned yesterday, and I am now currently in World 4 prior to the Grandfather battle. Forget the 2.5 hours, I am already about 4.5 hours now, but it sure is much, much more faster than the previous gameplay. If nothing goes wrong, meaning no problem with the Grandfather's, the crazy elevator's, and the Final boss' battles, theoretically I should finish the game in a few hours. I need to take a break now, though. So I will continue later.
Wish me luck for the upcoming aforementioned battles
