Full list of all 19 Tetris Blitz achievements worth 200 gamerscore. It takes around 80-100 hours to unlock all of the achievements on Windows Phone.
Clear a total of 100,000 lines
Get All Xbox LIVE Achievements
Beat previous highscore 5 times
Own 10 Power-Ups
Own 5 Power-Ups
Drop 150 Tetriminos in a single game without topping out
Clear a total of 10,000 lines
Drop a total of 10,000 Tetriminos
Clear at least 1 line with 10 consecutive piece drops
Clear a total of 150 Tetris line clears
Get a Tetris+ with 10 or more lines. (excludes last hurrah)
Use each available finisher in at least one game
Enter frenzy mode five times in one game
Score 500,000, or more points in a single game
Trigger three power-ups in the same line clear
Earn a cumulative score of 1,000,000 points
Clear 20 lines in a single cascade
Score 100,000 or more points in a single game
Clear a single line that contains all seven colors.