Full list of all 15 Hexic achievements worth 200 gamerscore. It takes around 15-20 hours to unlock all of the achievements on Windows Phone.
Created a Color Clear Hex from 5 hexes
Finished 100 levels
Finished 66 levels
Finished 33 levels
Earned three stars on 42 levels
Finish an anomaly level without letting an anomaly out
Used all moves in a level without clearing any Dark Fragments
Used every Booster and Assist in the game
Used +3 Moves and finished a level in the last 3 moves
Finished the How-To-Play Tutorial
Made a cluster of Line Clear Hexes
Finished a level by using an Assist on your last move
Made a Flower Bomb
Made 200 Color Clear Hexes
Made 100 Line Clear Hexes