What were the challenges before Bingo?

[Kitartas]

I'm new to SSD so Bingo has been around as long as I have been here, I never even considered that bingo was a new challenge until the newsletter announced that it would be replaced by something else.

Just for the sake of curiosity I was wondering what the old challenges were? I was just searching some old threads for something and saw reference to a portfolio and SR points - are they part of the old challenges?