Before I begin, that's my first guide and English isn't my mother tongue, so don't be harsh if you don't like it, thanks :)
First of all, the Minesweeper Title Update is Free and only available on Windows 8.1
Then, when you are in Minesweeper, you have to select ine the category Games, the Adventure mode.
Ok, so that was easy. Now that you are in Adventure mode, you have to complete the tutorial level (aka Level 0). It will explain you what to do in this game mode. Once you reach the end of the level, you will begin the Level 1, you will simply have to make your way through the blocks as you saw in the Level 0.
Once the exit reached, the scoreboard will appear, and normally : Achievement unlocked !
But you can be like me, and do not have any notifications for the achievement unlocked, and when you come back in the main menu to check your achievements, it may be still locked. Don't worry, actually mine is still locked in the main menu even tough I unlocked it (you can see that I unlocked it recently)
Thanks for reading this little guide, and I hope you will earn this achievement without problems :)