Use the mouse to shoot. Use the arrow keys or wasd to move misses Claus and cure the stunned zombie elfs. At the end of each level you get to assign the saved elfs to do various tasks: increase your range, your shooting speed, misses Claus's speed or make toys for Xmas. You must find the right balance between these so you'll have enough toys till Xmas and also stay alive till then.
nice and entertaining
It's a god time waster. I liked the idea that you have to balance your upgrades and the production speed. However, the game ended kinda abruptly, without me knowing what happened... I might have let too many elves hit the ice wall, but there wasn't any message telling me that. Except for the sudden ending I really enjoyed the game.