Originally Posted by Qwertystop
GUys. Guys. Guys.
I just found the file in Cave Story that defines whether or not different modes have been unlocked.
It's a text file. With the code explained right there.
Wow, it's almost as if the game maker likes us or something.
In all seriousness though, I don't see why you WOULDN'T want to play through it all again, to be perfectly honest.
But yes, congrats on that. HUZZAH!