For those unsure, a maiden over is where the batsmen/women fail to earn any runs off the 6 balls bowled.
Set up a game where it is limited to a set number of overs as per the achievement description. T20 for example.
For the achievement earner, simply bowl 2 overs of legal balls. I chose to play defensive shots (
)every time with my second controller just to ensure a total of 12 "dot balls".
The achievement will pop upon completion of your second maiden over in a row.