I played this game a few days ago. Looks pretty neat for Christmas themed Castle Defense game. I badically beat the whole series but for some reason I can't beat this one.

i never ever heard about this one before... maybe ill try to beat this one...
ADDITION:
nevermind... Impossible...
Yeah its impossible to do anything in that
ZOMG...I beat it...I do not know how I beat it but...It was kidn aeasy as a matter of fact...Last level is tough, but I did manage to kill the last enemies off...
my wrist is starting to hurt, i think its impossible, and its kinda like defend ur castle but more features, u can throw snow and stuff in this, its cool though

I hate when the castle gets filled up with snow.
I got to level 8 and then it started to lag...
So badly in fact that the whole game froze halfway into the level.
I don't like the throw them up to die way. I like clicking a lot until they die and screwing up my index finger. Obviously I always warm up before using the computer like you are supposed to do...
I don't really like the way that the enemies add snow as health. I mean how are you supposed to melt them besides throwing the elves down to the ground and using the "Hot Hand"?
I never lost, my computer simply can't handle the game. You lose when the snow covers your castle or what?
You lose by two ways, getting filled up with snow or by touched by the elves.
Kaboomhahahein is right, throwing them makes the gameplay bad, clicking them is better.
The castle should be replaced as in the toy shop over at north pole, and you remove elves that would destroy that building.
What is actually pissing me off, is that the melting features costs too much, you need to kill elves before you can buy them and melt the snow.
I liked it....
ADDITION:
You can also clear the snow by picking it up and tossing it off-screen.
You get a ton more points for throwing the elves STRAIGHT up (Otherwise they go offscreen, and you get no points), and they come down clearing a HUGE chunk of snow.
Here's a good guide, pick up snow, throw at it against the elves. It reduces snow and it also kill the elves.

Only if the snow lands off-screen. If it lands on-screen, you'll actually be putting more snow.