Ok - old news - tried tapping in all kinds of codes at the main screen but nothing happens. Also tried this under the 'fatality' stance and still nothing happens!
Then there was the thing about our pal Konga the drummer - tried getting ties (tried it with the same fighters, flawless, 2 out of three falls, 3 out of 5 falls), but it didn't work (yes, yes I know what the programmers said).
And then we have the portal mystery thing. It says "to pass, one has to defeat a representative of one's most powerful adversary". In Shang Tsung's konquest mode story, it said that his 'most powerful adversary' was Quan Chi. Tried it - didn't work! Oh! Boo! Hoo!