I just got the 700th sticker. I now have all 700 stickers.
Only one more sticker to go! Boss mode on Intense. After that, I'll have 100% of everything completed in the game.
Fun Fact: The "You've got over 600 stickers" announcement is dated 3/15/08
I got the 700th sticker 4/10/08, five days short of a month later. So it took nearly a month to get the last 100 stickers.







