Microsoft Ultimate Word Games

To unlock this achievement, you'll have to obtain all stars on a single Adventure map in any of the three game modes. In my opinion, Wordament is the faster and easiest game mode, but if you want to earn achievements as efficiently as possible, you might as well save this for Crosswords, since the only good way to level up in Crosswords is by completing Adventure Maps. You'll end up completing at least 5-6 Adventure Maps in Crosswords to get to level 80 anyway, so this achievement will come naturally on the way.

To unlock this achievement, you'll have to earn 3 stars on every level and every bonus level of a single map, including the final bonus level which unlocks after obtaining all other stars. Once you obtain every star on a map, a pop-up will appear and count up your stars, and congratulate you for obtaining every star. This is when the achievement will pop.