As of 4/92014 the achievement is now labelled correctly.
The best technique I can say to win as Orchid legit is too use roll back MK and then counter break, her moves are easily identifiable, but you can use this to your advantage.
This is mislabeled, this is for winning a ranked match as orchid.
I do not have good tips for orchid yet, I haven't played as her much.
Also you cannot play ranked when you are in a party.