Not that stupid... nobody had found it so far. A hidden achievement doesn't necessarily have to be very difficult, it is enough if it is well hidden. But we know that, and I think I remember that it was only on Day 1. Not sure. I'd like to see the results anyway, might give some idea where to try to get more clones. Now you've overreached the 3.500 you'll have plenty of time... Applause. This other game is just a distraction.