The easiest way to gain this achievement is on level 9.
Basically you play as Elsa in this level and her ability is a Glacier, you only need to make one Glacier each time you play the level. To make a Glacier you need to have 5 gems in a row (Horizontal or Vertical).
Then when you have created one Glacier on the board, simply use Elsa's Glacier ability on the Glacier you created on the board. This will count as one done.
Restart the level to refresh Elsa's Glacier ability and repeat the process until you have done 5. Then the achievement should POP!
NOTE - This can be done for the other Glacier achievements, just make an Iceberg (5 gems in a T or L shape) or Windchill (4 gems in a row). Now use Elsa's Glacier ability on either a Iceberg or Windchill to progress through the other achievements. 10 with the Iceberg and 20 with the Windchill.