Microsoft Minesweeper

For this achievement, you must open the daily challenge page. After that you have three options which are seperated by difficulty, easy, medium and hard. You can choose one of them and you must complete for the achievement.
For easy,
you must add minimum 10 flags over the mines. In this game type, you cannot open the blocks. You can only add flags. There are some important points for this daily challenge. You have to be careful on the numbers. This numbers shows how many mines there are on the near 9 square. For example if the number is 5, it means 5 0ver 9 square are mined already. Your mission is you must add 10 flags over the mined squares but in my opinion you must be luckly because there is no option for the opening the non-mined squares.
For medium,
In this game type you must open 15 square which are non-mined. You can open 2 mined squares. After finishing the one game, there is one more game opens, it means you have to clean 2 of them. It is also related with the luck.
After playing over than 100 games, i noticed a tips, and it is you can open the 4 corner squares of the main game chart in the first game. I never see a mined square on the 4 corner square.
For hard,
In this game type, you have to explode 93 mined squares in only 99 movement. If you open 6 non-mined square, game finishes and you lost.