Freeze The Infernos

The infernos, in different size, shape and colours, are there mocking and sneering at you. All you have got is a SnowMan, who has some snow balls. Shoot the infernos with the snow balls to freeze them. Freeze them, get points. But it is not an easy task. As you go up, you will come across many obstacles; your snow balls may be teleported, they may not be big enough to freeze a large inferno, etc. So play safe, don't get burned!