Originally Posted by phazer
Not sure if this has been patched since the guide was written, but I can get a Perfect score even if my score is lesser than my previously-set Expert score. Or at least, that's what it shows in-game.
Same here. I just got the achievement and some of the levels I had to redo, I didn't beat my money score, but it gave me a "Perfect" rating and the achievement popped no problem after the last level.