1.There are cannons of three different colours which unfreeze the blocks of the respective colour.

2.If you unfreeze all the blocks of one colour on the level they disappear.

3.Every second shot at the block freezes it again.

4.Mind that the bullets change colour if they strike the two-coloured blocks.

5.You have to make all the frozen imps fall into the fire in the bottom of the screen.

6.Be careful not to drop them in the ice!

7.If you have troubles with the level click the solution button.

update 1: Fixed problem with restarting.