Full list of all 10 Minesweeper achievements worth 50 gamerscore. It takes around 4-5 hours to unlock all of the achievements on Windows Phone.
Win a game on each difficulty in both Classic and Speed modes.
Reveal a square with a 6 or higher.
Reached the Ultimate rank.
Win a speed mode game with more than 10 seconds left on the clock.
Win a game on a minefield that is at least 12x12.
Triggered a mine on the second click.
Completed a minefield without using any flags on a minefield that is 9x9 or larger.
Trigger your first mine.
Win a game without using any powerups ranked as Player or higher.
Completed a minefield with five digs or less.