Here is the full list of all 13 Naughty Elves achievements.
Hit em with the snowball, hit em hard.
TRIPLE KILLLLLLL!!!!
Five is the third prime number. Because it can be written as 221 + 1, five is classified as a Fermat prime; therefore a regular polygon with 5 sides (a regular pentagon) is constructible with compass and unmarked straightedge.
10 is an even natural number following 9 and preceding 11. Ten is the base of the decimal numeral system, by far the most common system of denoting numbers in both spoken and written language.
15 (fifteen) is the natural number following 14 and preceding 16. In English, it is the smallest natural number with seven letters in its spelled name.
They begin to learn...
Let them pay for their treason!
That's a little overkill, don't you think?
Stop it! They'll never recover from this!
Extinguish 10 candles with your snowball.
Remember to drink your aim juice!
Knock out a fat elf without using a candy cane.
Save Christmas in under 20 minutes!