To add on to Shavoe69 solution.
You can use a solver and create as many words as possible in the 2 minutes you have. It may take a few tries to unlock this.
WARNING: Use the Wordament Solver at your own risk. The developers haunt the leaderboards for anything suspicious. They will ban you if they suspect you have cheated and you will then no longer be able to get the achievements.
Wordament Solver - http://dev.360surface.net/Wordament/EnterBoard.aspx