You have to clear the EX stage of the second Tetris Road (Tricky Road) for this achievement.
To get to this, on the main menu:
2nd option (Xbox Live)
3rd option (Create a Session)
Top left option, set it to the 2nd option from the top, which is tetris road.
Then select the top most option. This will search, come to a miniature lobby, and then load the game with a 15 second countdown.
To play this mode, you must have completed the previous Tetris road, which means you will have the following achievement:
Select the second option on the drop-down menu.
You have 5 stages in this road:
1) Eraser - Get 4 specified lines (2 minute time limit) (The play area will clear after this stage)
2) Target - Remove all of the gameplay area's highlighted tetris squares. 5 areas to remove. (4 minute time limit)
3) Cycle - Get a Single, Double, Triple, & a Tetris, in any order (2 minute time limit) (The play area will clear after this stage)
4) Target - Remove all of gameplay area's highlighted tetris squares. 5 areas to remove (4 minute time limit)
5) Eraser - Get 4 specified lines (90 second time limit)MAKE SURE YOU COMPLETE THE FINAL STAGE WITH A DOUBLE-LINE CLEARIf you do not, you will not be able to get this achievement on this playthrough of this Tetris Road.
If you finish stage 5 (Level Star) with a double-line clear, you'll get the EX stage...
EX) Eraser - Get 5 specified lines (110 second time limit).
If you manage to complete the EX stage, you will unlock this achievement.