Complete the following achievements to unlock Microsoft Gamerscore points.

Achievement	How to unlock
Class clown (90 points)	Unlock all the pranks in "Back to School".
Cloned fir trees (60 points)	Kick all the Christmas trees.
Cloning is defeated (190 points)	Complete "The School Year".
Dance battle (60 points)	Change the music of the breakdancer.
Faster than its shadow (60 points)	Win "The Duel" 3 - 0.
Go thaw out (90 points)	Unlock all the pranks in "Snow Class".
Golden goal (60 points)	Get the soccer ball outside the school.
Hit! (60 points)	Hit the teacher with a paper ball in "Pop Quiz".
It's freezing cold (60 points)	Complete "Snow Class".
Ma'am, I don't feel well (60 points)	Ring for a nurse.
Pigeon chase (60 points)	Chase after the pigeons near Grandpa.
This isn't for idiots (90 points)	Play and win in "Duels of Death" mode.
Vacation is here! (60 points)	Complete "Back to School".